History homework help

Hi. I need the following questions answered for this assignment:

1. Explain what W. E. B. Dubois meant when he said of Reconstruction, “The slave went free,
 stood a moment in the sun, then moved back towards slavery.”

2.How did the U.S. Government’s Indian policy change over the course of the 19th century as
white/Anglo settlements moved west?

3.In terms of costs and benefits, evaluate the “Great Transformation” of the late 19th century.