<span>Hello Laviihagreat,
Some inventions or ideas that helped to advance trade are, F</span>lat bottomed boats, Carts driven by animals, and <span>Seagoing vessels. These inventions or ideas helped advance trade.
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Answer: I am not really sure, but here is a hint
Franklin Roosevelt (FDR) was able to take America out of the Great Depression in the early 1930's through his liberal, hands on methods; and as a result he had ...
The answer to your question would have to be the discovery of coal
