What were two of Frederick Douglass’s major contributions to the Civil War?

He encouraged President Lincoln to make the emancipation of slaves the primary aim of the war.
He met with the president to discuss equal pay for black soldiers.
He made it possible for African Americans to buy plantations in the South.
He actively supported the recruitment of African Americans in the Union army.
He set up the American Red Cross to treat wounded African American soldiers.

A. He encouraged President Lincoln to make the emancipation of slaves the primary aim of the war.

Explanation:

was a consultant to President Abraham Lincoln and helped convince him that slaves should serve in the Union forces and that the abolition of slavery should be a goal of the war.

(and sorry this is so late)

montesquieu took the view that the roman republic had powers separated so that no one could usurp complete power. in the british constitutional system, montesquieu discerned a separation of powers among the monarch, parliament, and the courts of law.

your answer is

to dominate europe

and i know for a fact it can't be the others