Harriet Tubman and<span> Frederick Douglass were both slaves that became abolitionists</span>
Answer: The answer would be ''Mobilization''.
Explanation: The US army was a force that was mobilized considering the fact that many young men were needed for the war against the opposing forces which would have brought upon an end to the world as the people knew it.
Hope this has helped you, luv!! Goodluck! :-)
Both served immigrants of mostly European descent.
Both served immigrants of mostly Asian descent.
Both often detained immigrants for weeks or months.
Both required that immigrants pass health inspections.