13th century
15th century
18th century
b. New York City, N.Y.
c. Washington, D.C.
Columbia
Endeavor
Challenger
Among all America's Space Shuttles, the one that has met tragic endings was the space shuttle of Challenger.
The U.S. National Aeronautics and Space Administration (NASA) created the space shuttle, also known as the Space Transportation System, a partially reusable rocket-launched vehicle that was intended to orbit the Earth, transport people and cargo to and from orbiting spacecraft, and glide to a runway landing on its return to the planet's surface.
On January 28, 1986, the space shuttle Challenger exploded 73 seconds after liftoff, killing all seven crew members and permanently altering NASA's space programme. This was the shuttle's tenth mission. In April 1983, Challenger became the second shuttle to enter orbit.
To learn more about the Challenger here:
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It was located at a strategic point on the Niger River.
It traded in salt and gold with many other groups.
It fought most of its wars with smaller kingdoms.
Answer: It traded in salt and gold with many other groups.
Explanation:
The main goods in the trade routes of Ancient Africa were gold and salt. By 1000 B.C.E., the kingdom of Ghana had expanded and become notably wealthy. The land that today is Mauritania, Mali, and Senegal, provided enough gold to make Ghana a leader in the trans-Saharan trade system. Salt, which was sometimes employed as money, was excavated in the Sahara Desert.