Dan Bricklin
code breakers
Feed some people
The Glycemic Index is useful for some people who are struggling to lose weight. It is a study that shows how food in consumed and burned by the body and for some people how the food effects them.
Farming, fishing, hunting and trapping, and later mining. Some people were craftsmen, and made useful things (cloth, furniture, pottery, guns and gunpowder, etc) Some were merchants and traders.
The Spanish first started to do some traveling
Some people call it flat bread pizza.
There are many useful inventions of science. The answers vary. Some believe the number one invention that is the most useful in science is the electric furnace. It was made in 1889. The electric furnace converted aluminum to metal that was very useful. Another invention that people considered the most useful invention of science are antibiotics. Antibiotics help cure many illnesses.
there are useful answers on this site, just some people use this to post the wrong information.
Well about 500 million people world wide speak it or some derivative of it so its pretty useful
some people made them out of a box and a couple of strings or gum bands
the sandwhiches today are made by people in there houses they have to but bread ham and some butter and that makes a ham sandwhich
Almost any article or accessory can be made from wool -- useful by humans from infant to senior, even some useful by animals. Examples include clothing, bedding, shoes, bags and more.