The correct answer is - trade.
The Sumerians engaged in trade with their move of exchanging their surplus food for materials like the copper that they needed to develop their weapons and thus their army forces. This was a very smart move from their side because they managed to use the resource they had in abundance but was scarce in the other surrounding areas so that they take what they need to become stronger and pretty much defend more efficiently from the same people they were engaging in trade with.
You put your questions in the wrong category, love. You need to move them to physics.
Answer:
1787: Constitution creates the first federal system the newly drafted Constitution included a system that would share powers between the states and the national government.
Explanation:
One incredible accomplishment of the American founding was the making of a compelling protected structure of political organizations. Two significant parts of the U.S. Constitution federalism and the separation of power partially, the framers' endeavors to isolate administrative power.
Federalism reduced the government powers by limiting the ruling of the state leadership authority and state governments together with these lines controlling the impact of both.
