What was the most significant cause of the Civil War? slavery

sectionalism (agriculture vs industry)

states' rights

the election of 1860

Slavery

Explanation:

The causes for the civil war include the Declaration of Independence, morality, Westward movement, ethnicity, and slavery. Among all these causes of the US civil war, slavery is considered as the most significant. The paper that follows will describe how the issue of slavery contributed to the US civil war.

what are local authorities doing to fix the problem

explanation: what are local authorities doing to fix the problem

2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."