I think an invasion from Morocco <span>marks the final stage in the collapse of the Songhai empire</span>
Answer: Appomattox matched with General Robert E Lee surrendered to General Ulysses S. Grant
Manassas matched with First battle with heavy casualties
Gettysburg matched with Turned the tide of the war in the North's favor.
Fort Sumter matched with Where the Civil War began
Explanation:
I took the test hopes this helps :D
I think the main cause was slavery in the economy and society and there were pro slavery and free states so that didn’t work out