What roles did African American men take on during the war?

African Americans also served as gunners, sailors on privateers and in the Continental Navy during the Revolution. While the majority of blacks who contributed to the struggle for independence performed routine jobs, a few, such as James Lafayette, gained renown serving as spies or orderlies for well-known military leaders.

Explanation:

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it provided for equal trade rights among nations in china.

incident infrared radiation is blocked. visible and ultraviolet radiation heat   earth.

earth radiates infrared radiation. infrared radiation is blocked and heats earth. visible and shortwave radiation heat earth.

earth radiates longwave radiation

longwave radiation is reflected downward longwave radiation heats earth