Answer:
Thomas L. Jennings was the first black man to receive a patent. The patent was awarded on March 3, 1821 (US Patent 3306x) for his discovery of a process called dry-scouring which was the forerunner of today's modern dry-cleaning. Jennings was born free in New York City, New York in 179
Explanation:
Presidential; two groups (executive & legislative) that check and balances each other because the legislature elects the executive in a parliamentary government. The executive is a branch of government that has a responsibility for the daily administration of the state of bureaucracy. The legislative is the one has the power to create law.
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Please be more specific I don’t quite understand the question