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Because the Transcontinental Railroad was made, early Americans could make it from one side of the Americas to the other faster.
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Because the telephone was invented, we now can communicate easily with others across the world.
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Because of the stock market crash of 1929, we had the Great Depression.
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Because the calculator was invented, we can now calculate mathematical equations at a greater and more efficient speed.
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Because of the World Wide Web, we can now find information on various topics more efficiently, as well as finding more up-to-date news.
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Because of the horrific terrorist attacks on the Twin Towers in New York, as well as the many planes that were hijacked on that dreadful day, we now have greater security in our airports to ensure the security of our lives in the future.
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Because Bin Laden was killed, Al Queda is now weaker and more vulnerable without their leader to help them through the tough times.
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