How did new scientific knowledge the building of the panama canal?

The scientific knowledge help the building of the panama canal because : fewer workers got sick from malaria and yellow fever

Back then, the building of panama canal was stunted because a lot of workers were injected by the disease and causing them unable to work. Colonel Gorgas , the chief medical officer appointed for the project read some discoveries regarding the treatment of the diseases and managed to cure a lot of workers

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Louis xvi wanted to force aristocrats to pay taxes for the first time