What is the triangular trade of the 17th and 18th century?

Triangular trade or triangle trade is a historical term indicating trade among three ports or regions. Triangular trade usually evolves when a region has export commodities that are not required in the region from which its major imports come. Triangular trade thus provides a method for rectifying trade imbalances between the above regions.

People from everywhere around the world immigrate to the United States because it's what people call the #1 country. To get in, you need a visa to show the imigration service. Then imigration service gives you a period of time you can stay in the U.S. and if you want to become an U.S. citizen then you have to go through a process where you write letter to the government saying that the country you were born in is dangerous or that your life is in danger. Another way you can become a citizen is by the green card, for the green card you are given a number and a nonimigrant person picks a ball saying the numeber and whoever has that number becomes a citizen. If you don't get the green card and the government doesn't approve your letter then you are deported which means you get sent back to your country.

Explanation:

I'm an immigrant :)