The important contribution to navigation made by Eratosthenes in the third-century bc was a reasonably accurate calculation of the circumference of our planet.
Who is Eratosthenes?
Eratosthenes was born in 276 BC and died in 194 BC. He was a well-known poet, mathematician, a researcher in geography, and theorist of music. He was the first to gauge the size of the planet.
The Earth was first measured by Eratosthenes of Cyrene. The precise measurement of Earth's circumference was greatly aided by Eratosthenes' work in the third-century bc.
As a result, the Eratosthenes in the third century bc accurate calculation of the Earth.
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A major change to the American economy during the industrial revolution was settling in areas with a river nearby, populating smaller towns, creating more jobs, and a rapid growth in technological development.
Answer:
On Good Friday 1865, actor-turned assassin John Wilkes Booth not only ended a great American life in progress, but made his victim -- Abraham Lincoln -- seem exponentially greater in death. Ever since the 16th president died, nine hours after Booth fired his fatal shot, American presidents have been judged against the myth that replaced the man. The savior of the union, great emancipator and martyr of liberty has proven an all but impossible act to follow.
Explanation:
Pre-industrial society refers to social attributes and forms of political and cultural organization that were prevalent before the advent of the Industrial Revolution, which occurred from 1750 to 1850.
Answer:
Reagan placed a great deal of political pressure on the Soviet Union to make drastic changes.
Explanation:
This was part of the “Tear Down this Wall” speech made Ronald Reagan, the 40th president of the United States of America at the Brandenburg Gate of the Berlin Wall, West Berlin, June 12, 1987. This speech was made following the following the G7 summit meeting in Venice as the president noted recent Soviet progress toward “a new policy of reform and openness. Reagan was said to have placed a great deal of political pressure on the Soviet Union to make drastic changes.