What somewhat unique type of warfare ensued during the second war in Iraq that facilitated a simultaneous right-left punch

What type of sentence has at least one independent and one dependent clause

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.

Explain how stock market speculation contributed to the great depression.