What were the 3 main reasons for the start of the american civil war?

Which of the following resulted from the passage of the dawes act in 1887?

Asap 50 choose one civil war topic! write a report of at least 400 words -a major civil war battle -civil war munitions and uniforms -the emancipation proclamation -the gettysburg adress make sure to correctly cite your research source or sources in your writing!

Can someone me out with this , i'm putting 30 points on it