Well one reason could be that nobody is at a higher status than another so there's little chance of a dictatorship or anything. A different reason is a balance of power leaves no desire to gain more from unfairness.
Answer:
The both sides of the Atlantic are America and Europe. In America there was the American Revolution in the US at the end of the 18th century. There were also similar revolutions in Latin American Countries in the 19th century, but they're usually called "war of Independence", not revolution.
