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.
Answer:
During 1989 and 1990, the Berlin Wall came down, borders opened, and free elections ousted Communist regimes everywhere in eastern Europe. In late 1991 the Soviet Union itself dissolved into its component republics. With stunning speed, the Iron Curtain was lifted and the Cold War came to an end.
Explanation:
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Answer:
The Portuguese nobleman Vasco da Gama
Explanation:
The British army embarked on a massive and costly expedition to fight the French and their Native allies, which nearly bankrupt the British government. To help their economy, the British began taxing the colonists. The colonists didn't care for the enforcement of taxes and began protesting, attacking tax collectors, etc...
