Identify the contributions of and explain the roles played by each of the following individuals during the Civil War.
A. Abraham Lincoln
B. Jefferson Davis
C. Stonewall Jackson
D. Ulysses S. Grant
E. Robert E. Lee

How are the republican and democratic presidential candidates chosen? a. they are nominated by their state governments. b. each is nominated by his or her respective party. c. each is chosen by the governor of his or her home state. d. they are chosen by the house of representatives.