Which of the following established the guidelines by which new states would be added to the united states? a. proclamation of 1763 b. articles of confederation c. u. s. constitution of 1789 d. northwest ordinance of 1787

It is A because according to History.com, "In 1763, at ethe end of the French and Indian War, the British issued a proclamation,mainly intended to conciliate the Indians by checking the encroachment of settlers on their lands. In the centuries since the proclamation, it has become one of the cornerstones of Native American law in the United States and Canada." This shows that I am correct.

name two ways organisms join a population and two ways organisms leave a population. two ways organisms join a population are birth rate and immigration. two ways they leave are death rate and emigration.

explanation: