Which country's gained independence during the 20th century?

choose all answers that are

a. french guiana
b. suriname
c. ecuador
d. guyana

for the united states of america, 1945 to 1964 was a time of high economic growth and general prosperity. it was also a time of confrontation as the capitalist united states and its allies politically opposed the soviet union and other communist countries; the cold war had begun.

explanation:

i belive the continental association was created to boycott all contact with british goods.

i also belive it was in december 1, 1774