Leaders are either heads of state or heads of government, depending on that's constitutionally the chief executive from the country's government. The increase of agriculture commenced to vary that condition of affairs. In the land of Sumer (in what's now Iraq) the creation of irrigation necessitated grander preparations. Control of https://energyefficiencygrants.blogspot.com/2024/08/what-are-steps-to-apply-for-free.html