Black nationalism, or "Black Power" as it is sometimes known focused on black people improving their own communities, rather than fighting for full integration into American society as a whole.
Answer:
C. The middle kingdom. Everybody wants to be in the middle
1840s
Factory-made agricultural machinery increases farmers' need for cash and encourages commercial farming
1841
Practical grain drill patented
1842
First grain elevator, Buffalo, NY
1843
Sir John Lawes founded the commercial fertilizer industry by developing a process for making superphosphate
1844
Practical mowing machine patented
1847
Irrigation begun in Utah
1849
Mixed chemical fertilizers sold commercially
