To what extent did american agriculture change from 1850 to 1890?

Who was the leader of the black nationalists in the 1920s?

Pls. i will give you 40 points colonists felt the increased taxes in the 1760s and 1770s violated which document? the virginia declaration of rights the mayflower compact the english bill of rights common sense

List two reason that james k.polk gives for supporting the annexation of texas