How would the National Road and the Erie Canal eventually contribute to the U. S. economy? to the westward expansion of trade and settlement?

The National Road and the Erie Canal would eventually make it easier to transport goods throughout the nation, making a better economy. Westward expansion would then be made easier as the Erie Canal and National Road would provide fertile land and resources as well as allowing products to move back east.

aug 15, 2012 - although van leeuwenhoek was not the inventor of the microscope, he advanced it more he loved to grind and focus a new lens in order to see the unseen world. most of leeuwenhoek's microscopes were silver. in a simple but significant experiment (1668), he demonstrated that worms found on