To understand how the present affects the future
Li Yuan who became emperor Gaozu <span />
Answer:
One of the most infamous of these political machines was Tammany Hall, the Democratic Party machine that played a major role in controlling New York City and New York politics and helping immigrants, most notably the Irish, rise up in American politics from the 1790s to the 1960s.
Explanation:
A. Completely successful in obtaining equal rights for African Americans