One important goal accomplished by the lewis and clark expedition was the a. mapping of the american west b. establishment of forts across the american west c. claiming of the pacific ocean for the united states d. collection of large stores of precious metals

b

explanation:

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