We can see that the most important factors that actually made the Midwest to be the Rust Belt is: a decrease in manufacturing.
The Rust Belt actually refers to a region of the United States. This region experienced industrial decline starting around 1980. This was as a result of the sharp decline in industrial manufacturing which led to abandonment of factories.
We can see that the most important factors that led to the Midwest becoming known as the Rust Belt is the decrease in manufacturing.
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Answer:
an increase in population
decrease in manufacturing
Explanation:
