Some causes and effects of European exploration is:
1. They brought diseases to the U.S and Africa which effected those people and causing them to die
2. They found Africans and wanted their gold and money which effected them to start the American slave trade
And many other reasons....
Answer:
A: China and South Africa
Explanation:
During the 1980's, America attempted to prevent the spread of communism to China and South Africa.