Under this plan the legislative would have a single house

The New Jersey Plan

Explanation:

The less populous states were adamantly opposed to giving most of the control of the national government to the more populous states, and so proposed an alternative plan that would have kept the one-vote-per-state representation under one legislative body from the Articles of Confederation.

the answer is c my brotha. c.   formed an alliance with the soviet union.

. political or economical policy that isolates a country from participating in international relationships. it has been suggested that the united states participates in isolationism because of its lack of involvement in particular wars or alliances.