The emergence of "rock and roll" is associated with which of these eras?
a) world war ii
b) post-world war i
c) post-world war ii
d) early 20th century

the answer is a) the proclamation of 1763.

c) he felt the constitution clearly gave states this right.

the speech revealed that eastern european countries were no threat to their neighbors, which led to the creation of the truman doctrine i think this might be correct.