The battle of Lexington and Concord sparked the revolution and made it look like the militia/irregular warfare favored by the colonists might stand a shot against the great British Army.
This built confidence and enabled people to feel like there might be a shot.
I'm assuming you're talking about the French king. The answer is A. The estates general checked the kings power in raising taxes
Answer b there is safety in numbers
In general, political think tanks in the US do not provide lobbying services directly. They also don't provide and goods or material services that can be used in an economy. They only provide ideas.
