Why was the struggle between Ali and Muawya so significant both then and now?

How did testimony such as this from the triangle shirtwaist factory disaster affect the workplace?

Explain how republicans gained control of southern state governments?

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.