Answer:
1
b.Checks and Balances
2.
a.To gain support for ratifying the Constitution
Explanation:
The Federalist was a series of essays, written by Alexander Hamilton, James Madison and John Hay. Number 51 was written by Madison, and emphasize on the subject of checks and balances, to eliminate the possibility of tyranny or a monarchy by the individual in the Presidential position, or any dissent between the state's members of the federation. The position in these writings was to galvanize support for the Constitution of 1787, which would be ratified in 1789.