Workers who have organized into unions have much more power to make changes than workers acting on their own. This power can be used through collective bargaining to negotiate improved wages and working conditions. The option of calling a legal strike, should negotiations fail, makes it much more likely that worker demands will be met.
Causes for the American Revolution were: Stamp Acts, Boston Tea Party/Intolerable Acts, French and Indian War, Townshend Acts, Boston Massacre, Thomas Paine and First and the Second Continental Congress. The effects of the American Revolution were: Treaty of Paris, Declaration of Independence, Bill of Rights, and so on. The causes for the French Revolution were: problems with money like low amounts that occurred in war, people were growing hungry, aggressive taxes only for the lower class and so on. <span />
I will say it's C. It extended over three major continents.
