1. sectionalism was the main cause of the civil war. the southern states seceded from the Union because they didn't want President Lincoln to free their slaves.
2. The Southern was devasted because it couldn't its agriculture products to the North or overseas. The Northen economy thrived on its manufacturing
3. the bureau provided assistance to tens of thousands of former slaves and impoverished whites in the Southern States
He called them literally "Herrenrasse" in German, which can be translated to "master race", or "race of the lords", and was understood as a race superior to others
It makes the soil very fertile and makes it easy to use irrigation if needed.