2 The Antarctic Treaty is an agreement among countries to protect and preserve Antarctica for peaceful and scientific purposes. It prohibits military activities, promotes scientific research, and ensures the conservation of the environment.

3 economical water morę than 200 water miles from the cast

4 The three largest states in the world are Russia, Canada, and China. And the three smallest states are Vatican City, Monaco, and Nauru.

5 The youngest state in the world is South Sudan. It gained independence from Sudan in 2011.

6. An enclave is a portion of territory that is completely surrounded by another country. For example, the Vatican City is an enclave within Rome, Italy. On the other hand, an exclave is a part of a country that is geographically separated from the main part of the country. A famous example is the Kaliningrad Oblast.