Which of the following were new inventions or developments that contributed to the nation's economic expansion in the early 1800s? Check all of the boxes that apply.

steamships
cotton gin
McCormick reaper
Erie Canal
spoils system

How could a works-cited list a reader determine whether to believe the claims you make in an essay? a. by synthesizing your conclusions into a simple objective summary o b. by proving that your claims are supported with credible evidence ) c. by allowing you to make claims without quoting other writers o d. by providing a clear organizational structure to your essay