The required cuba amend its constitution to grant the u. s. certain rights and powers as well as give the u. s. control over a naval base at guantanamo bay.

a. bayonet constitution

b. platt amendment

c. open door policy

The Platt Amendment required Cuba amend its constitution to grant the U.S. certain rights and powers as well as give the U.S. control over a naval base at Guantanamo Bay.  

Option B

Explanation:

U.S. had occupied Cube in 1898 during the Spanish-American War for maintaining its independence. However, it did not wanted to end its control and influence over Cuba therefore Platt Amendment was entered into. It was a treaty or pact between U.S. and Cuba governing their relations.

Under this treaty conditions provided under which the Cuba would be free from the military occupation of U.S. and also provide rights to U.S which will allow U.S. to get involved in the affairs of Cuba.

chamberlains goal was to stop the uk ad germany from fighting which he went to hitler and asked if he could sign a peace treaty between germany and the uk