The correct answer would be D. footnote
Using simple words, imperialism is a policy of certain country involving a will of extending its power by using any kind of pressure or force.
For example - In 1939 Nazi Germany together with Soviet Russia jointly invaded Poland, in the result, both countries extended its borders.
An amendment to the Constitution must be approved by 3/4 of the states (A). That's why it's so difficult for an amendment to be ratified.
The answer is B!!!!!! Thank me after you pass your test.