Both were created by movements that started because of high and unfair tax (3rd estate- highest tax; America - taxes on everything like tea)
Both were created by rebellious groups that were not officially part of any government (America- Sons of Liberty; France- National Assembly)
Both were influenced by the Enlightenment ideas (Freedom of speech, equality, freedom of speech, etc.)
America- Wanted to break away from GB;
France - Wanted to change government
France -emphasized equality and fairness more
America- Emphasized freedoms and being independent more;