Guys i will gave a 50 points if i see a response pleasd

1: Extending a country's influence by means of colonization.

2: For economic gain and access to trade, or to increase influence.

3: The practice of avoiding other nations in all matters of diplomacy.

4: It kept the United States out of foreign wars which were massively unpopular.

5: An army and to win the hearts of natives.

i do believe   by (keeping an organized record of all sources he or she referenced)good luck.

explanation:

answer; the intervening variable;