Henry Cabot Lodge led the opposition to joining the League. He was motivated by Republican concerns that the League would commit the United States to an expensive organization that would reduce the United States' ability to defend its own interests.Where Wilson and the League's supporters saw merit in an international body that would work for peace and collective security for its members, Opponents feared the consequences of involvement in Europe's tangled politics, now even more complex because of the 1919 peace settlement.

Background information: Wilson was a Democrat, and he failed to win Republican support for the League. Read this passage about Republican opposition.
Which of these best matches the type of foreign policy that Republicans were proposing?
1.imperialism
2.economic imperialism
3.neutrality
4.appeasement