African american contribution at the home from

this is one of the contribution

President Ulysses S. Grant appointed Ebenezer Bassett as the U.S. Minister to Haiti and the Dominican Republic in 1869. He was the first African American to serve as a U.S. diplomat anywhere in the world.

Here's one more

In 1948, President Truman appointed Edward R. Dudley to the position of United States Envoy Extraordinary and Minister‎ Plenipotentiary to Liberia. In accepting this position he became, the first United States Ambassador to Liberia and the first African-American ambassador. Dudley's chief objectives were to implement President Truman's Four Point Plan, which outlined foreign aid to Africa. The plan also sought to provide technical assistance, as well as agricultural and industrial equipment and skills training.

john maynard keynes developed new economic theories in response to the stock market crash of 1929. great depression of the 1930s. first and second world wars. economic boom of the 1950s.

i believe the correct answer is option b. most eastern european nations joined nato.

though i could be wrong, option d. the eastern european nations were granted complete independence, would be another choice.

hope this ! : )