The Industrial Revolution involved a shift in the United States from manual labor-based industry to more technical and machine-based manufacturing. It also paved the way for many manufacturers.
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Sumer was responsible for many inventions and important contributions to inventions of both the time and today. However, Sumerian city-states often fought with each other. They went to war for glory and more territory. This power - hungry people build walls to protect from invading armies looking to loot, pillage, and grow wealthy. The walls surrounded each city - state, closing them off from the rest of Mesopotamia. This lead to isolation, and more war. The city - states were constantly in a state of unrest.
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Answer:
History tells us that World War II ended with a relentless Allied leap from island-to-island across the Pacific, culminating with the fire-bombing of Tokyo. The atomic bombs on Hiroshima and Nagasaki, we are told, delivered the final blow, immediately bringing the Japanese to their knees.
Explanation:
I believe 5th dynasty of China is the Sui. Not sure what dynasties you speak of but that comes to mind first
Tree rings are annual growth rings and their thickness indicates how growing conditions were for that year. Index fossils in their type and frequency are indicative of the environment that those organisms grew in and how prolific life was then in that environment. Ice cores drilled through glaciers and ice sheets like in Antarctica tell us about such things as the concentration of greenhouse gases like carbon dioxide (as bubbles in the ice layers) and also about climatic conditions in glacial and interglacial periods.