1.      National borders are where one country ends and another country begins.

2.      Government officials at the borders check, that is, take a careful look at, everyone who enters.

3.      A tax is money that you must pay to the government.

4.      It says that a country owns the ocean within 13.8 miles (22.2 kilometers) of that country’s shore.

5.      There is an international law that says that a country may use the natural resources within 124.3 miles (200 kilometers) of its shore.