Horizontally:
1 - One of the longest river in the world.5 - What is the mode of government in the USA?7 - The only state that situated on an island in mid-Pacific Ocean.8 - What is the automobile capital of the USA?11 - What document was signed on the 4th of july that provided an independence of the US?12 - Which country sold the Alaska to US?13 - The city where the headquarters of NASA is situated.15 - What is the currency of the US?17 - In what city was killed the U.S. President Kennedy?18 - What is demonym for the US?20 - How many states is USA composed of?Vertically:
2 - Where the Declaration of Independence of the United States was signed?3 - The main person in the US government?4 - One of the most important American writers.6 - Main language of the USA.9 - The most popular religion in US.10 - What is the upper chamber of the United States Congress?14 - The name of one of the most famous university in US.16 - What country is bordered with USA by Niagara Falls?19 - Which country is bordered on the south of the US?