The Truman doctrine and NATO were United States responses to the communist threat after WWII.
<span>Lesotho
The Kingdom of Lesotho, located in southern Africa, is completely surrounded by the country of South Africa. The capital of Lesotho is Maseru. Lesotho was previously known as Basutoland. Lesotho gained independence from the United Kingdom in 1966. The country is a member of the United Nations. Forty percent of its inhabitants live below the poverty line.</span><span />
Plymouth colony would be the answer.
The Tang dynasty fostered the most advanced trade network of the four.