The U.S. has 6. No other countries have flags there.
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it depends on what country you are in because in some country's like Australia (where i live) you don't have to but i know for a fact that in other country's you have to.
All national flags should be at the same height, and the same size.
The American countries that have symmetrical flags are New Mexico, Arizona, and Alabama. Other symmetrical flags are the Scottish, Enlish, British, Italian, Russian, French, German, Swiss, & Aboriganal.
The majority of US flags (about 93.8%) are made in the US. Other countries which make US flags are China, India, and Taiwan.
Yes, although they're not required, there aren't any countries that don't have an official flag. The biggest stand-out is Nepal which has a flag, but it's not rectangular like all the other countries' flags are.
the Americans and other countries
There are numerous places one can purchase flags and banners related to their country online. The United States Flag Store have American flags, political flags and flags of other countries. One can also purchase such items from the Flag and Bunting Store.
They hoped other countries would treat them more equally.
The two countries that have square shaped flags are Vatican City and Switzerland. The Vatican City flag is square shaped with yellow on one side and white on the other. The Swiss flag is square shaped and has a red background with a white cross in the center.
The Flag Shop sells various countries flags. Target may have a limited selection of world flags. You may be able to find a flag for the country you are looking for on ebay or other online auction site.