The power of eminent domain allows government to do which of the following?

The power of eminent domain enables the government to take private property for public use, provided that the property owner is compensated fairly. This principle is rooted in the Fifth Amendment of the United States Constitution, which states that private property cannot be taken for public use without just compensation. This power is typically exercised for the sake of public projects such as roads, schools, and parks that ultimately serve the community's interest.

In this context, the other options do not accurately reflect the power of eminent domain. Holding prisoners without trial during wartime is related to issues of civil liberties and national security, not property rights. Using the Armed Forces to address civil disturbances pertains to maintaining order and enforcing laws rather than property acquisition. Mailing official communications without paying for postage concerns postal regulations and governmental operations, which is distinctly separate from eminent domain.