What were the three main ideas expressed in the federalist papers?

The three main ideas expressed in the Federalist Papers were:

A.) A federal form of government that listed the powers of the national government and had all other powers to the states reserved.

B.) Separation of powers of the national government by dividing it into 3 branches : The legislative, the executive, and the judiciary.

C.) A republican form of government, which is a representative government obliged to the people.

Hope this helps.

These islands/chinampas then provided rich soil for crops with easy access to water. i hope this is correct, im so sorry if its not !