Books of entry format

What process is believed to be responsible for the formation of the grand canyon? a) diverging tectonic plates b) converging tectonic plates c) erosion over a long period of time d) caving in of the ground due to erosion

What is the quickest way to resolve problems from a supply shock?

Analyze and evaluate the motivation and the rationale behind western expansion through the louisiana purchase that took hold in the united states at the start of the 19th century (long essay question)