There were numerous things. For starters, he could've resigned and showed that he doesn't plan to become a dictator. In addition, Romans were all about outward appearance and social status and much of Caesar's behavior towards the high ranking senate members was humiliating to them so they naturally loathed him. He could've given them more respect in order to gain their support.
He wanted to use the Mississippi for trade
. The colonists were angry over the Townshend Acts, which led to riots. It was important because it was a turning point in America's quest for independence.
Dropping the bombs on Hiroshima and Nagasaki were not a military necessity because from other reports, the Japanese were about to surrender anyway. It was justifiable because we were scared and we acted because we were threatened.
A) The South didn't need to conquer the North to win its independence.
The South was just planning on defending itself till the North grew tired, but the North had to conquer the South to be able to reunite the Union and win the war.
