Modern international law recognizes only three lawful justifications for waging war: self-defense, defense of an ally required by the terms of a treaty, and approval by the United Nations.
Answer: The slave trade had weakened many African kingdoms.
Explanation:
Although the Spanish and Portuguese had already been enslaving African eople since the 1500s, the Atlantic slave trade of the 18th century was different and to a bigger scale. The huge demand for slaves pushed leaders into constant conflict with locals, which diverted them from trade and undermined their defenses. Eventually, the weakening of the African kingdoms would lead to further colonization by Europeans throughout the 1800s.
An informal deal was struck to resolve the dispute: the Compromise of 1877, which awarded all 20 electoral votes to Hayes; in return for the Democrats' acquiescence to Hayes' election, the Republicans agreed to withdraw federal troops from the South, ending Reconstruction.
