A historian studying Southern identity in the 19th century could use Frederick Law Olmsted's The Cotton Kingdom as a piece of appropriate historical evidence supporting which of the following theses? A. The growth of manufacturing industries in the North allowed New England to dominate the South during the 19th century
B. Conceptions of white supremacy played a major role in establishing 19th-century Southern identity
C. Many Southern whites resented the negative social and economic consequences of 19th-century slavery.
D. Northern abolitionists had a responsibility to end slavery in the South in order to benefit members of all races.