There was party stability, and the dominance of both Democrat and Republican parties was strong, which led to a big impact in the lives of millions of voters.
The appearance of political machines, which were party organizations that incentivized people to join their party and increased their voter´s loyalty.
Political machines became a central element of life for civilians.
Political parties not only served the political needs of society, but also their needs for social services.
The answer is option A. A territory that was free soil was closed to slaver, while one that had popular sovereignty was allowed to vote on the slavery issue.
