What was the southern boundary of western territory added to quebec by the quebec act of 1774

The territory was expanded south into Indian Reserve and included Ontario, parts of Illinois, Indiana, Michigan, Ohio, Wisconsin, and Minnesota.

The Quebec Act of 1774 was an act that settled the procedures of governance in the Province of Quebec, at that time known as British North America. This was a big change because before the act there was an only a temporary government.

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.