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The second industrial revolution changed the industry and trade of Europe in many ways. It changed the conditions under which the workers did their work. The factories centralized work in buildings that were made with one purpose in mind. Products were made differently because of the assembly line so the time when one worker did something from beginning to end was gone. And many craftsmen were replaced by machines of many sorts.
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Explanation:
Roosevelt made a destroyer for bases deal, got congress to pass the Lend-Lease Act and developed the hemispheric defense zone strategy.
Johannes Kepler discovered that planets move in elliptical orbits
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Over the centuries, the Great Wall has been built and rebuilt for three main purposes: as kingdom border defenses, to defend China's northern border, and for tourism.
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