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3. 3-D Printing.....You probably didn’t know that what’s now known as 3-D printing began in the early 1980s with a process called selective laser sintering. University of Texas alum Carl Deckard began inventing the process, commonly referred to as SLS, while he was still a graduate student.
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vote
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In other U.S. elections, candidates are elected directly by popular vote. But the president and vice president are not elected directly by citizens. Instead, they're chosen by “electors” through a process called the Electoral College. ... It was a compromise between a popular vote by citizens and a vote in Congress.
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A. They limit human work in hazardous enviroments.
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A government would legally take control of another territory to add it to its own by annexing it.
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38th parallel line.
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It's the 38th parallel line of latitude that separates communist north Korea and the U.S backed republic of Korea. This line is situated at the 38 degrees towards north from the earth equatorial line and is the example of geometric boundary in which borders are closed and a very small movement is allowed across it. Prior to the korean war, this line serves as a border between the north Korea and the south Korea.
