The answer is letter B. The Prohibiting Importation of
Slaves of 1807 is a US federal act that specified that no new
slaves were allowable to be smuggled into the United States. It took influence
in 1808, the initial date permitted by the United States Constitution. This law was
endorsed by President Thomas Jefferson, who named for its enactment in his 1806
State of the Union Address.
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Charles Sumner was a radical Republican in the sense they wished to destroy all remnants of the Confederacy and give African Americans full rights as citizens. So he wanted a "guarantee that former slaves
<span> would have equality with whites.</span>"
One of the most significant challenges is building an airplane had to do with "propulsion", since the technology that allowed motors to have enough energy to lift an airplane into the sky with a passenger wasn't available for most of history.
Yes, it is true .............