A time when america had only one party the democratic-republicans
John Deere and Cyrus McCormick
Guided discovery through computer simulations or activities.
In contrast to a classroom model where a teacher might simply deliver information to students and have them seek to retain the information by taking notes and responding to quiz questions, etc, computer simulations that allow students to work through a process of learning can prompt students to draw their own inferences and make their own discoveries of knowledge in a particular area of inquiry.
Lincoln thought colonization could resolve the issue of slavery. For much of his career, Lincoln believed that colonization—or the idea that a majority of the African American population should leave the United States and settle in Africa or Central America—was the best way to confront the problem of slavery.