a historian who compares events in both America to events in South America is organizing history by what?

Abraham Lincoln

Explanation:

Lincoln was born in poverty in a log cabin and

was raised on the frontier primarily in Indiana.

He was self-educated and became a lawyer,

Whig Party leader, Illinois state legislator, and

U. S. Congressman from Illinois. In 1849 he

returned to his law practice but became vexed

by the opening of additional lands to slavery as

a result of the Kansas-Nebraska Act. He

reentered politics in 1854, becoming a leader in

the new Republican Party and he reached a

national audience in the 1858 debates against

Stephen Douglas. Lincoln ran for President in

1860, sweeping the North in victory. Pro-slavery

elements in the South equated his success with

the North's rejection of their right to practice

slavery, and southern states began seceding

from the union. To secure its independence, the

new Confederate States of America fired on Fort

Sumter, a U. S. fort in the South, and Lincoln

called up forces to suppress the rebellion and

restore the Union.

The correct answer is option C.

A historian who compares events in north america to events in south america is organizing history by region.

Using region based data is the best way to compare the history of two cities, countries and continents.

Culture, period and theme are the wrong options.