The Apollo-Soyuz Test Project was a joint United States-U.S.S.R. venture to live and work together on a space platform in orbit.
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• They create decimal system based on Hindu numerals and the zero
• Advances also made in geometry, algebra, and trigonometry.
• Astronomers built observations and measured the Earth. They also used the astrolabe, an instrument designed to measure the plot and position of stars.
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The north had more population, a grater industrial base, and more wealth
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seeking greater economic opportunity
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