There are many reasons, but first you must realize that the differences are not as great as you might think..
Two things affect this - heredity, and environment. Heredity ensures that each child inherits genetic material from both parents. When both parents are from the same local region, and there is mixing over several generations, the local group will begin to take on similar appearances because many share common ancestry. Different regions may have different dominating characteristics based on the environment such as how well they metabolize food, handle cold, etc. This can cause specific regions to take on appearances different from other regions.
Then there is environment. As I stated above, each region has it's own environment, climate, food availability, etc. These factors can have a dramatic effect on appearance of general populations. For example, many Americans are overweight. (Including me)
Heredity though only goes so far. The fact is that no regions is totally isolated. There is gene flow everywhere there are people. You will find that a detailed genetic analysis would reveal that most white Americans have some genes from Africans, Asians, and Native Americans. People in general don't change appearance at country borders. Instead, the closer you get to the border, the more they resemble those in the neighboring country. It is a gradual shift with the differences really showing up only in the centers. What you see as being a unique appearance in one country is really just a blend of the countries surrounding that country. Look carefully at populations. You will find some neat things. "White" skin with "African" facial features, dark skin with "European" features. Dark skin and Asian features, "Yellow" skin and "middle eastern" features. "White" skin and "mongolian" features. You can go further and even break apart facial features from body build. Short stocky northern European builds with mongolian features on African faces with Asian eyes. It's really an eye opener if you know what you are looking for. Try it out and you will never look at race or ethnicity the same again.
There are many differences. The main difference between Roman children and present day children is that they are from different cultures and societies. Roman children were taught respect for their elders and for the institutions of government. They were taught that civic matters should take precedent over personal goals. Today's children are educated in the opposite direction, with emphasis on self-esteem and personal achievements rather than working for the greater good. Roman children did not have the many health advantages that present day children enjoy. Many Roman children died before their tenth birthdays. And of course, the Roman children did not have the advantages afforded by today's instant communication methods such as phoning, texting, emailing, etc.There are many differences. The main difference between Roman children and present day children is that they are from different cultures and societies. Roman children were taught respect for their elders and for the institutions of government. They were taught that civic matters should take precedent over personal goals. Today's children are educated in the opposite direction, with emphasis on self-esteem and personal achievements rather than working for the greater good. Roman children did not have the many health advantages that present day children enjoy. Many Roman children died before their tenth birthdays. And of course, the Roman children did not have the advantages afforded by today's instant communication methods such as phoning, texting, emailing, etc.There are many differences. The main difference between Roman children and present day children is that they are from different cultures and societies. Roman children were taught respect for their elders and for the institutions of government. They were taught that civic matters should take precedent over personal goals. Today's children are educated in the opposite direction, with emphasis on self-esteem and personal achievements rather than working for the greater good. Roman children did not have the many health advantages that present day children enjoy. Many Roman children died before their tenth birthdays. And of course, the Roman children did not have the advantages afforded by today's instant communication methods such as phoning, texting, emailing, etc.There are many differences. The main difference between Roman children and present day children is that they are from different cultures and societies. Roman children were taught respect for their elders and for the institutions of government. They were taught that civic matters should take precedent over personal goals. Today's children are educated in the opposite direction, with emphasis on self-esteem and personal achievements rather than working for the greater good. Roman children did not have the many health advantages that present day children enjoy. Many Roman children died before their tenth birthdays. And of course, the Roman children did not have the advantages afforded by today's instant communication methods such as phoning, texting, emailing, etc.There are many differences. The main difference between Roman children and present day children is that they are from different cultures and societies. Roman children were taught respect for their elders and for the institutions of government. They were taught that civic matters should take precedent over personal goals. Today's children are educated in the opposite direction, with emphasis on self-esteem and personal achievements rather than working for the greater good. Roman children did not have the many health advantages that present day children enjoy. Many Roman children died before their tenth birthdays. And of course, the Roman children did not have the advantages afforded by today's instant communication methods such as phoning, texting, emailing, etc.There are many differences. The main difference between Roman children and present day children is that they are from different cultures and societies. Roman children were taught respect for their elders and for the institutions of government. They were taught that civic matters should take precedent over personal goals. Today's children are educated in the opposite direction, with emphasis on self-esteem and personal achievements rather than working for the greater good. Roman children did not have the many health advantages that present day children enjoy. Many Roman children died before their tenth birthdays. And of course, the Roman children did not have the advantages afforded by today's instant communication methods such as phoning, texting, emailing, etc.There are many differences. The main difference between Roman children and present day children is that they are from different cultures and societies. Roman children were taught respect for their elders and for the institutions of government. They were taught that civic matters should take precedent over personal goals. Today's children are educated in the opposite direction, with emphasis on self-esteem and personal achievements rather than working for the greater good. Roman children did not have the many health advantages that present day children enjoy. Many Roman children died before their tenth birthdays. And of course, the Roman children did not have the advantages afforded by today's instant communication methods such as phoning, texting, emailing, etc.There are many differences. The main difference between Roman children and present day children is that they are from different cultures and societies. Roman children were taught respect for their elders and for the institutions of government. They were taught that civic matters should take precedent over personal goals. Today's children are educated in the opposite direction, with emphasis on self-esteem and personal achievements rather than working for the greater good. Roman children did not have the many health advantages that present day children enjoy. Many Roman children died before their tenth birthdays. And of course, the Roman children did not have the advantages afforded by today's instant communication methods such as phoning, texting, emailing, etc.There are many differences. The main difference between Roman children and present day children is that they are from different cultures and societies. Roman children were taught respect for their elders and for the institutions of government. They were taught that civic matters should take precedent over personal goals. Today's children are educated in the opposite direction, with emphasis on self-esteem and personal achievements rather than working for the greater good. Roman children did not have the many health advantages that present day children enjoy. Many Roman children died before their tenth birthdays. And of course, the Roman children did not have the advantages afforded by today's instant communication methods such as phoning, texting, emailing, etc.
the differences between them are the spanish set up trading posts with the native Americans the french set up fur trades for everyone to go to and the English all worked even the children.
Children of the same father but different mothers are Half Brothers or Half Sisters, as are children of the same mother but different fathers. If two people who each have children from a previous marriage marry each other, then their existing children are step brothers or step sisters to each other.
because the children are more likely to die in developing countries ans so to ensure that some of their children survive, parents have lots of children.
Well not really, the children's crusade occured during the fifth crusade, but they are two different things. There were also two different children's crusades, the French and Germans. They both failed.
Children's Day is celebrated on different days in different countries.
yes
There is none. All families are different and do what works for them.
There are several different government funds available for children in many different countries. The Child Trust Fund is available in the United Kingdom.
meiosis
It would depend on the laws of the country you are referring to. Different countries have different regulations.
These words are synonyms; the age of children is 3-7 years but many differences exist in the world. For details in some countries see the link below.
The generational gap is a term popularized in Western countries during the 1960s referring to differences between people of younger generations and their elders, especially between children and their parents.
It is an activity where people from different countries come together to compete in different competitions and races to win glory for their country
It would depend on the laws of the country you are referring to. Different countries have different regulations.
Bill and Shirley's divorce wasn't amicable, but they kept up appearances for the sake of the children.
Nothing special is required by religion, it's only related to the traditions & cultures of the different countries.