English-speaking countries. The USA

Since when do Americans celebrate the Independence Day?

What is the biggest city in the USA?

How many stars are there on the American flag?

Who was the first President in America?

Who discovered America?

What is the official symbol of the USA?

Who sent the Statue of Liberty to the USA?

What is the USA?

What is the capital of the USA?

How is the natural boarder between the USA and Canada called?