I've got an essay to write for tomorrow on the following topic (or rather, based on the following question) - Why did France fail to keep its constitutional monarchy form of goverment?
If you couldn't tell, this is in relation with the event that occured on June 20, 1791 and the formation of the Republican opposition (I probably sound like a complete fool right now, I admit I'm no history wiz.).
If you could give me some reasons for why France couldn't last as a constitutional monarchy, in the form of a brief answer and using the simplest sentences possible, I would be much obliged.