In the modern us political system, what is the main system political parties use to nominate candidates? primary caucus general election party appointment

Asupporter of slavery would respond to john brown's actions at harper's ferry with

What impact did improvements in farming technology near the end of the nineteenth century have on the american economy? a. more energy was needed to power equipment, creating the renewable energy industry. b. less labor was necessary on farms, leading workers to pursue other jobs. c. less money was invested in farming as many locally owned farms went bankrupt. d. more demand for agricultural products reduced the price of food and animal products.

Which choice best describes the general trend for the countries shown, for the period 2008 - 2010?