African american played important roles for both sides during the war. which statement is not true?

a. african americans served as members of the union army.
b. slaves worked in the military camps of the confederate army.
c. slaves served as soldiers in the confederate army.
d. african americans served as spies and guides for the union.

Marine exptoration of oil uses seismic waves to locate oil in the seabed. what is a negative impact from seismic waves on the aquatic ecosystem of the ocean? a.seismic waves kill microoganisms b.seismic waves disrupts the sand and causes seafloor erosion c.seismic waves have virtually no adverse affects on marine life d.seismic waves damage the sonar that dolphins and whales use to orient themselves underwater

What characteristics did the kiowa share with the other plains people? a) they migrated from the same places b) they were nomadic hunters c) they used the horse extensively d) they spoke the common language! and you

What did roosevelt believe was a common cause of both bank runs and the great depression?