"and we do further declare it to be our royal will and pleasure, for the present as aforesaid, to reserve under our sovereignty, protection, and dominion, for the use of the said indians, all the lands and territories not included within the limits of our said three new as also all the lands and territories lying to the westward of the sources of the rivers which fall into the sea from the west and north west as aforesaid. and we do hereby strictly forbid, on pain of our displeasure, all our loving subjects from making any purchases or settlements whatever, or taking possession of any of the lands above " - excerpt from the "proclamation of 1763" (treaty signed at the end of the french & indian war) based on this passage, what is the best reason why the french and indian war (seven years' war) led to the american revolution?