The correct answer is C) The spoils system was the practice of granting jobs and political favors to those who supported the winning party during the election.
The statement about the spoils system that is true is "The spoils system was the practice of granting jobs and political favors to those who supported the winning party during the election."
After the victory of Democrat Andrew Jackson over John Quincy Adams that represented the National Republican Party in the elections of 1828, Adams gave important jobs in the US federal government to his supporters and people who helped during the campaign. Instead of appointing the kind of experienced politicians who were capable of doing a good job for their credentials, Jackson tried to thank his supporters, relatives, and friends with government jobs. That was known as "the spoil system."
By 1880, the transcontinental railroad was transporting $50 million worth of freight each year. In addition to transporting western food crops and raw materials to East Coast markets and manufactured goods from East Coast cities to the West Coast, the railroad also facilitated international trade.