The island had air fields the the u.s military needed.
Answer:
Trying to prevent increasing tensions with Native neighbors
Explanation:
If colonists tried moving more west, natives could become disgruntled and attack colonists
Many freedmen did not have anywhere to go because many people at the time did not allow blacks to work for them. So blacks worked for farmers for small wages. This created so-called new slavery because the blacks would be paid so little for their work (almost a few cents for 1 year of work)
Legislative: makes laws
executive: passes laws
judicial: enforce laws
a victory at the siege of vicksburg mississippi in 1863