Answer: The rights of citizens
Explanation:
If you want a common reason for the Glorious Revolution, French Revolution, and American Revolution, I would point to the common cause of defending the rights of citizens over against governments that were seen as oppressive.
The Glorious Revolution in England, in 1688, was led by members of Parliament against King James II, who had tried to assert greater power and control for himself as king, infringing on their rights.
The American Revolution, launched with the Declaration of Independence in 1776, was seeking to free America from unfair government imposed on the colonies by the British home government. In the Declaration of Independence, Thomas Jefferson listed "facts to be submitted to a candid world" to demonstrate that the British king had been seeking to establish "an absolute Tyranny over these States."
The French Revolution, which began in 1789, had multiple causes -- including significant economic problems in the country. But it also was, at its heart, a revolution seeking political rights for all citizens. The existing system gave all the rights to the very few at the top of the social hierarchy -- ranking clergy and the nobility. The peasants in the countryside pretty much just had the right to pay taxes and do the bidding of the nobility and monarchy. They could be called out to build a road if the king said so. The lands they farmed could be trampled by a noble's hunting party if the noble in that region wanted to go hunting. The political, economic and social situations of city workers were similar to that of peasants. Bourgeois merchant-class folks had much more economic advantage, but also were taxed heavily and slighted on political rights. So for all of the "3rd Estate" (the "commoner" class), the revolution had much to do with claiming their rights as human beings and citizens. The first famous document to come out of the French Revolution was all about that: "The Declaration on the Rights of Man and Citizen."