Who was the person that coined the phrase "Manifest Destiny"?

Explanation:

Newspaper editor John O'Sullivan coined the term "manifest destiny" in 1845 to describe the essence of this mindset.

the answer is a. laws were enacted in the aftermath of the plot to make it harder to free slaves,increasing sectionalism

abraham lincoln  (february 12, 1809  – april 15, 1865) was an american statesman, politician, and lawyer who served as the 16th  president of the united states  from 1861 until  his assassination  in april 1865. lincoln led the nation through the  american civil war, its bloodiest war and its greatest moral, constitutional, and political crisis.[2][3]  he preserved the  union,  abolished slavery, strengthened the  federal government, and modernized  the u.s. economy.