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An organization of economic and political union of some of the countries of Europe.

From sweet to mint, bubblegum is a popular treat around the world. Ask questions about this confectionery here, including what happens when you swallow a piece of gum. (It's not what you think!)

The laws and regulations set by the United States to apply to all of the people in the country. These are the supreme laws of the United States and take precedence over all other laws, rules, and regulations.

History of the Allied landing on Normandy on 6 June 1944 and the following campaign to take Cherbourg and break out of the beach head.

The betta or Siamese fighting fish, is a freshwater fish that is commonly seen in aquariums. Males come in a wide range of colors while females tend to be more drably colored. The name “fighting fish” comes from the aggressive behavior of both male and female fish towards other members of their species. All questions about betas and Siamese fighting fish can be directed here.

Muhammad was the founder of the Islam religion. Considered by Muslims to be a messenger of God, Muhammad was born in 570 and his revelations from God make up the verses of the Qu'ran, the sacred text at the center of Islam. Muhammad died in 632 at the age of 62. Ask questions here about his life and his founding of one of the world's major religions.

Questions related to the C++ Computer Programming Language. This ranges all the way from K&R C to the most recent ANSI incarnations of C++, including advanced topics such as Object Oriented Design and Programming, Standard Template Library, and Exceptions. C++ has become one of the most popular languages today, and has been used to write all sort of things for nearly all of the modern operating systems and applications." It it a good compromise between speed, advanced power, and complexity.

Twitter is a communication service that enables you to quickly send out short messages about what you are doing to a network of people

Seals and sea lions are Pinnipeds or fin-footed marine mammals. Earless seals that lack ear flaps are true seals, while eared seals are sea lions. These mammals can spend their life on water and partly on land.

Doctors who treat oral problems such as tooth decay. They also help maintain your teeth to prevent oral problems.

Described as a "horse in striped pajamas," three species of zebra inhabit Africa. They are equiids, which means they are members of the horse family and are odd-toed ungulates. Zebras inhabit tropical grasslands in sub-Saharan Africa. Social herd animals, they live in groups called harems. Their distinctive black and white stripes have made them a favorite of children for many generations.

Gymnastics is an artistic sport involving performance of exercises requiring physical strength, flexibility, agility and complex coordination.

This topic covers various diagnostic tests and procedures. The types of questions it should include are: 'What illness does a Myelogram detect?' 'What do the letters CT stand for?' 'What are the potential risks in having frequent X-rays?' 'What is an IVP?' and 'How long does it take to do an MRI?'

An alternator is an old term for electric generator that converts mechanical energy to electrical energy producing alternating current. Alternators are mainly used for recharging batteries and to power electrical loads of vehicles.

Eminem (born Marshall Bruce Mathers III) is an American rapper, record producer, and actor who is ranked in the 100 Greatest Artists of All Time by Rolling Stone magazine.

Neptune, the 8th planet from the Sun and nearly a twin of planet Uranus, is the fourth-largest planet by diameter and the furthest planet discovered so far in our solar system. Planet Neptune gets its name after the Roman god of the sea. It is a gas giant.

Sumer was a region in ancient Mesopotamia, which is now modern day Iraq. The Sumer civilization was one of the first to develop agricultural skills.

Chevrolet is known for its medium-duty commercial trucks and sport utility vehicles (SUV). Some of the current Chevy trucks and SUVs are the Colorado, Silverado, Avalanche, Tahoe, and Suburban.

Power steering provided mechanical steering assistance to the drivers of most land vehicles, including automobiles and trucks. Today, most power steering systems use hydraulic system in order to maneuver the vehicle’s wheels.

American Idol is a reality competition to find new solo musical talent, based on the British show, Pop Idol. The show debuted in 2002 on Fox and is one of the most popular shows on American television.

The VW Jetta is a compact car manufactured by Volkswagen since 1979. As of 2006, the company sold more than 6.6 million Jetta models worldwide, one-third of which was from the US.

The Kingdom of Sweden is a country located in Northern Europe. It is the 55th biggest country in the world at 173,745 sq mi and was ranked as the world’s second most competitive country in 2010.

The conduct of warfare requires large numbers of specialized equipment. Questions about the tools and weapons of war fit in this category.

Harley-Davidson motorcycles are noted for their heavy customizations that bring about the chopper style of motorbikes. Distinguished by their frame, suspension and engine, Harley-Davidson motorcycles may belong to one of the five model families: Touring, Sportster, Dyna, Softail, and VRSC.

Order Coleoptera is the largest group in the animal kingdom. With over 230 families and more than 350,000 know species, this category is where you need to be to get your questions answered about beetles.

Have you ever heard of an article of clothing without a design? Even the plainest clothes, furniture, accessories, etc. have some sort of design. Ask your questions about how fashion design works and what sort of design each place has in this fabulous category.

Caribou are the cervids of the Far North, most notably of Canada and Alaska. Also known as reindeer in Europe and northern Asia, these migratory members of the deer family make their home on the Tundra during the brief summer and the sub-Arctic boreal forests during the winter.

Rhode Island was one of America's original thirteen colonies. In terms of land, it is the smallest of the fifty states. However, it has the longest official name, State of Rhode Island and Providence Plantations.

Originally organized in 1917, the National Hockey League is a non-profit association which manages a major professional ice hockey league of 30 franchised member clubs, 24 of which are located in the US and six in Canada.

A virus is a small infectious agent that can replicate only inside the living cells of organisms. Viruses display a wide diversity of shapes and sizes, called morphologies. Generally viruses are much smaller than bacteria. Most viruses that have been studied have a diameter between 10 and 300 nanometres.