When ______, this was the beginning of American involvement in Vietnam.

When ______, this was the beginning of American involvement in Vietnam.

A.the United States decided to provide France with military aid in their fight in Vietnam

B.the United States started to provide aid for the South Vietnamese government after the Geneva Conference in 1854

C.the United States sent more and more military advisers to South Vietnam

D.the United States began to Americanize the war in Vietnam

正确答案是A