A primary source is about somebody that witnessed an event or something
A secondary source comes from someone that heard that didn’t witness the event
For example the news is a secondary source and the person that was at the event is primary
Answer:
Many scholars believe that the collapse of the Indus Valley Civilization was caused by climate change. By 1800 BCE, the Indus Valley climate grew cooler and drier, and a tectonic event may have diverted or disrupted river systems, which were the lifelines of the Indus Valley Civilization.
Explanation:
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The answer to the question is the letter "C" which is "Europeans learned about science and medicine from the Islamic world". Holy Land remained under control of Christian and Muslim is only in conflict with other religions. Jews and Crusaders have the same religious practices and structure.
Answer:
The correct answer is an ascent in nativism and the Great Migration Explanation:
The old and the new came into sharp clash during the 1920s. While numerous Americans commended the rise of present day innovations and less prohibitive social standards, others firmly questioned the social changes of the 1920s.
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I remember learning this, it should be A