When the war ended, approximately 3 million american men had served in the military on both sides?

The correct answer is true.

It is true that when the war ended, approximately 3 million American men had served in the military on both sides.

We are talking about the Civil War in the United States, which started in 1861 and ended in 1865. Yes, approximately 3 million American men served in the military on the Union Army side or the Confederate Army side. Many reasons caused the internal confrontation of Americans, but the most important one was the issue of slavery and abolitionism. The Northerners supported abolitionism and the Southerners supported slavery because they depended on slaves to produce cash crops in the large plantations.

the dust bowl, otherwise known as the dirty thirties, was a huge dust storm that killed multiple (and i mean  multiple) farmer's crops, leaving them homeless, and foodless, and jobless. in california, there were 5.7 million residents, and the population shrank as mexicans were repatriated. however, when the dustbowl happened, a lot of people began to move to california. by 1940, 250,000 people had arrived. therefore, your answer would be  the population increased, massively.  i hope this !

explanation:

. 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.