Answer:
An empire consists of a central state that also controls large amounts of territory and often diverse populations
Empires rise and grow as they expand power and influence, and can fall if they lose control of too much territory or are overthrown
Historians can better understand these processes by comparing how they occurred in different empires
Explanation:
C. the assassination of the Archduke.
Reason #1: Even after the 15th amendment was ratified, some states still found ways to circumvent the Constitution and prevent all African-Americans from voting.
Reason #2: The Supreme Court struck it down in 1915, many states used the "grandfather clause" to keep descendents of slaves out of elections. The clause said you could not vote unless your grandfather had voted -- an impossibility for most people whose ancestors were slaves, African-Americans.
Reason #3: Discrimination practices also prevented African-Americans from voting.
It was signed at La Francport near Compiègne.