Answer:
boat
Explanation: hope that helps :>
Causes of the Civil War Causes for the outbreak of Civil War existed in plenty and one of the most prominent among them was the prevalence of slavery in the United States during this period. While the economy of the Northern states was driven by industries, the same was driven by agriculture in the Southern states.
Ok so it will be B because they recognized through economic agreements
Every year, floods on the Tigris and Euphrates rivers brought silt, a mix of rich soil and tiny rocks, to the land. The fertile silt made the land ideal for farming.