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
I believe the correct answer is B. English.
It is the language that the immigrants who wanted to start living in Nicaragua spoke. All of the other options are actually Nicaraguan indigenous languages spoken there before the immigrants came. <span />
The answer is D-Russia.
please mark as brainiest answer.
