Answer:
Separation of powers
Explanation:
Separation of powers is the term given for the division of political authority among the three branches of government: executive, legislative, and judicial. It was first coined in the United States under the Constitution.
Engineering may be the sum
good jobs , better environments, good living, education,more food
There was a series of laws and amendments passed to give them their rights, and example would be:
The right to vote
The destruction of man being enslaved do to color of skin
Etc.
But of course this stuff kept going until the late 1800`s, but finally died down
