Which of these led to slaves becoming more valuable than before? A. The Tariff of Abominations
B. The American System
C. The McCormick reaper
D. The cotton gin

Name three new weapons that changed how ww! was fought and how?

Which source would best a historian understand the effect of the great chicago fire on families? a. a biography of a chicago family displaced by the fire b. a letter from a grandmother in new york to her family in chicago c. a newspaper editorial about families who were displaced d. an oral history dictated by an adolescent who fled the fire

In 150 to 200 words, use evidence to compare the ideas of the abolition of the slave trade and the abolition of slavery