What was the effect of the nazi invasion of the soviet union? a. it required the germans to divert all their planes from britain to conduct air raids on moscow. b. it strengthened the german army due to the weapons it captured from the soviet army. c. the german army couldn’t sustain a two-front war and this contributed to their downfall. d. due to the quick german victory, germany was able to send more troops to the western front.

C.The German army couldn’t sustain a two-front war and this contributed to their downfall.  

Explanation:

On June 22, 1941, Nazi Germany propelled an unexpected attack against the Soviet Union, its partner in the war against Poland. Before the year's over, German troops had progressed just about 1,000 miles to the edges of Moscow. Not long after the intrusion, portable executing units started the mass homicide of Soviet Jews.

German military and civilian  occupation approaches prompted the passings of a large number of Soviet detainees of war and Soviet civilian.

b. major john c. frémont led a rebellion called the bear flag revolt.

explanation:

during the bear flag revolt, from june to july 1846, a small group of american settlers in california rebelled against the mexican government and proclaimed california an independent republic. the republic was short-lived because soon after the bear flag was raised, the u.s. military began occupying california, which went on to join the union in 1850. the bear flag became the official state flag in 1911.

copernicus finished the first manuscript of his book, "de revolutionibus orbium coelestium" ("on the revolutions of the heavenly spheres") in 1532. in it, copernicus established that the planets orbited the sun rather than the earth. he laid out his model of the solar system and the path of the planets.