Your answer is D hope this helps
The thing which was a major factor that threatened the major unity in the United States in the mid-19th century was:
<h3>The Great Depression</h3>
This refers to the period around 1929 in the United States which has a profound effect on the national economy.
This led to the failure of many banks, increase in unemployment and high deflation rates which all threatened the national unity.
Read more about Great Depression here:
brainly.com/question/441267
Answer: European diseases had killed much of the native workforce
Explanation:
The fact that many natives died due to European diseases was an important reason why Spanish plantation owners used enslaved Africans instead of enslaved natives.
Answer:
I suppose, It can be known as a Pardon
Explanation:
A pardon is a government decision to allow a person to be absolved of guilt for an alleged crime or other legal offense, as if the act never occurred. The pardon may be granted before or after conviction for the crime