(mc)which of these events accelerated the nuclear arms race between the united states and the soviet union? the vietnam war the berlin blockade the cuban missile crisis the launch of sputnik

I think the answer is D

The correct answer is the launch of Sputnik.

Sputnik was a Soviet made satellite that was the first to successfully orbit the Earth. After this accomplishment, many citizens were worried about Soviet technological capabilities. Americans feared that the Soviet Union would use these advancements to attack the US. This was a fear considering that the US and Soviet Union were in the midst of the Cold War. With this in mind, the US drastically increased spending on space related missions. This culminated with the US putting a man on the moon in 1969.

when world war i broke out across europe in 1914, president woodrow wilson proclaimed the united states would remain neutral, and many americans supported this policy of nonintervention. however, public opinion about neutrality started to change after the sinking of the british ocean liner lusitania by a german u-boat in 1915; almost 2,000 people perished, including 128 americans. along with news of the zimmerman telegram threatening an alliance between germany and mexico, wilson asked congress for a declaration of war against germany. the u.s. officially entered the conflict on april 6, 1917.