In which ways did the Indus river help the Harappan civilization thrive A. their river provided fertile farmland and good trade routes
B. the river helped make the harappan people good swimmers and sailor
C. the river flooded the cities and poisoned well water

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation:

d definitly is not