Answer:
The French Revolution
The Declaration of the Rights of Man and of the Citizen.
Explanation:
He was a cruel king back in the day.
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It would be a "proportional" tax rate system that uses the same rate for all income levels, although in most western countries this is not used. Instead a "progressive" tax structure is used.
Answer:
I generally recommend checking your car's oil at least once a month, if not more frequently. Your oil probably only needs to be changed between two and four times per year, which means that if you only rely on oil changes, you could have an unchecked issue for months before it's fixed.
