The Emancipation Proclamation took effect.. A. immediately after President Lincoln wrote it.

B. before the battles of Chancellorsville and Antietam.

C. many years after the end of the Civil War.

D. after Southern states refused to rejoin the Union.

Option D.

D.after Southern states refused to rejoin the Union.

Explanation:

Emancipation proclamation was issued by President Abraham Lincoln on January 1, 1863. The proclamation states that all all people held in slavery should be set free. President Abraham Lincoln has always opposed slavery which made him to issue emancipation proclamation. It was issued during the third year of United States civil war. It was decrease that freed slaves could be enlisted in the Union's army which in turn will increase Union's available manpower. It was done for the rebellious state to rejoin the union.

the answer to number 5 is fort sumter

here are some major conflicts i found. maybe pick one and do more research on it. (cause i ain't writing 6 paragraphs)

in 1877, the nez perce war took place.

1881 - president james garfield was assassinated.

1882 - the chinese exclusion act was passed.

1883 - a decision in the civil rights cases legalized racial segregation in the united states.

1887 - the dawes act was passed.

1893 - the panic of 1893 took place. (what a creative name)

and there are probably other topics you can find if you just search up "united states timeline," or "conflicts in the 19th century for america."

then once you find a topic you like find out how it affected the people of america and what not. (sorry if this feels a bit short changed, history was and never will be one of my strong topics)