Answer:
The major purpose of slave codes was to regulate the treatment of slave by their owners so the answer would be D.
Explanation:
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
An abundance of natural resources including Salt and Gold minerals.
This statement best explains how economic capitalism affected China during the mid-19th century : China's territory was divided into zones that were economically dominated by specific European powers
To gain the interest for Those companies, the Chinese government implemented various policy that bring a lot of benefits for companies who're willing to operate in the territory
