(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.

answer; taking up arms to defend the nation;

martin luther believed that selling indulgences was wrong and gave people a license to sin. the roman catholic church used the practice of indulgences to raise money for major building projects.