20. All men are created equal, says the great Declaration and now a
great act attests this verity. Today we make the Declaration a
reality. ... The Declaration was only half established by
Independence. The greatest duty remained behind. In assuring the
equal rights all we complete the work.
-Senator Charles Sumner, 1870
What is the great act" referred to by Senator Sumner in this excerpt?
F. The Senate's readmission of the last Confederate state
G. The addition of Hiram Rhodes Revels to the U. S. Senate
H. The Senate's acquittal of President Andrew Johnson
J. The election of the first woman to the U. S. Senate

G. The addition of Hiram Rhodes Revels to the U.S. Senate

Explanation:

Hiram Rhodes Revels was the first black Senator in the United States and he represented Mississippi. On the day he was to be seated in the Senate, Southern Democrats opposed his seating thus prompting a debate that ended in a vote.

In this debate, Charles Sumner, a known anti-slavery Republican, uttered those words to reflect that the time had finally come to treat African Americans as equal as the Constitution intended.

president thomas jefferson hoped that the embargo act of 1807 would the united states by demonstrating to britain and france their dependence on american goods, convincing them to respect american neutrality and stop impressing american seamen. instead, the act had a devastating effect on american trade.