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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The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
The first test case for Reconstruction took place on Sea Island or Port Royal in South Carolina in 1861, where the Union Army tried to redistribute land to the freedmen.
We are talking about a moment in the history of the United States in 1861, when the Union Army invaded and capture Sea Island, in South Carolina. There they established a project called "Port Royal Experiment." The Union made this place a work center for former slaves that worked the farm fields that had been left behind by southern landlords. Historians think that 9000 to 10,000 black people stayed on the island when white people abandon it due to the Civil War.
It benefited the elderly people after retirement.
b option steam ships hope it helps u
The answer is c. Civil War. The states of the South were
against any interference from the Federal government particularly on the issue
of slavery. When Lincoln was elected,
the Southern states felt that their rights to own slaves would be jeopardized and
this would lead to Civil War.
