Final answer:
Andrew Jackson's removal of deposits from the Second Bank of the United States and the appointment of Roger B. Taney are key events in American history that weakened the bank's control over the nation's currency and credit system.
Step-by-step explanation:
Andrew Jackson's removal of deposits from the Second Bank of the United States and his appointment of Roger B. Taney as Secretary of the Treasury to carry out this task are key events in American history. Jackson's removal of deposits involved shifting the federal government's funds from the national bank to state banks, known as 'pet banks.' This move was part of Jackson's broader plan to weaken the bank's control over the nation's currency and credit system.