How does Madison say that power will be checked under the new Constitution?

Madison goes on to describe the roles of separation of powers, checks and balances, and ... prerequisite to limited constitutional government because a concentration of political power is ... one branch tries to extend their powers, the other branch will step in and check their power ..What does this say about human nature?

If men were angels, no government would be necessary. ... government can serve as a check on the power of factions, and the tyranny of the majority. ... All of the Constitution's checks and balances, Madison concludes, serve to preserve ... partition of power among the several departments, as laid down in the Constitution?

for many centuries there were important factors which the economies of the muslim empires developed increasingly. they applied economic procedures in production, investment, finance, taxation and property. they used to tax certain goods (for example: harvest), they charged interest on money lent, they signed contracts with merchants; they relied on a common currency, and they used checks as well as promissory notes. with the money collected by means of taxation, the government provided the needy with an income. in addition, trading networks covered huge distances, so far regions started to have contact and exchange goods. this trade network covered areas of asia, africa and europe.

i only have part a but here is the first one: - lewis and clark are born

- lewis marries sacajawea and clark is jealous  

- clark drowns lewis and then goes to jail