(Natural resources) give me a historical connection to the unit

This is not only historical, but also current. South Sudan, the world's newest country, has been undergoing armed conflicts for years, partly because of various political issues, but also because all these warring factions are in need of money, and the country is full of crude oil that has been completely undeveloped.

its perfect how it was

a system of cooperative federalism emerged, as the powers of the federal government expanded.