What limits did the U. S., U. S.S. R, and Great Britain agree to regarding nuclear weapons testing in 1963?

A. each nation was permitted a limited number of tests per year

B. testing could only occur underground

C. testing plans had to be submitted to the other countries for approval

D. all testing had to take place on uninhabited islands

B. testing could only occur underground

Explanation:

Just took the test

although world war i began in 1914, the united states did not join the war until 1917. the additional firepower, resources, and soldiers of the u.s. to tip the balance of the war in favor of the allies. remaining neutral. when war broke out in 1914, the united states had a policy of neutrality.

the correct answer is:   the domino theory states that if one country in a region came under the influence of communism, then the surrounding countries would follow in a domino effect.