<span>The Ghana, Mali, and Songhai empires each grew wealthy and powerful through their trade of many products, but particularly gold. Because of the the empires were so heavily dependent on trade, various circumstances that diminished the empires' trading capacities, including the death of a leader or the strengthening of a rival empire, eventually led to their decline.</span>
From reading the document, it can be gathered that the Great Leap Forward caused Shanghai to plunge into economic turmoil, it resulted in critical food shortages and hunger, and it caused many to attempt to leave the country out of desperation.
Answer:
D-As a consequence of this event
Explanation:
This directly says, "hey this thing happened BECAUSE this thing took place"
The answer would be farm.hope this helped!