Please help me! The concept seen the pictures above is

a. desertification

b. terrace farming

c. deforestation

d. migration

evaluate the extent to which the seven years' war (french and indian war, 1754–1763) marked a turning point in american relations with great britain, analyzing what changed and what stayed the same from the period before the war to the period after it.

wwii

explanation:

c) troops march forward in close formation against newer, more accurate weapons

four sitting presidents have been assassinated while in office but the first was abraham lincoln,