Question

how did the cold war change under president reagan? check all that apply. the détente policy was continued. the united states built up its military. the united states developed the sdi plan. the arms race slowed. the united states and the ussr built more missiles.

Explanation:

1. Analyze "The détente policy was continued": Détente was a period of relaxed tensions, but Reagan took a more confrontational approach, so this is incorrect.
2. Analyze "The United States built up its military": Reagan increased military spending and built up the military to confront the USSR, so this is correct.
3. Analyze "The United States developed the SDI plan": Reagan proposed the Strategic Defense Initiative (SDI), also known as "Star Wars", so this is correct.
4. Analyze "The arms race slowed": Reagan's policies actually intensified the arms race, so this is incorrect.
5. Analyze "The United States and the USSR built more missiles": Under Reagan, the US and USSR engaged in an arms buildup, including more missiles, so this is correct.

Answer:

B. The United States built up its military.
C. The United States developed the SDI plan.
E. The United States and the USSR built more missiles.