Final answer:
The Federalists opposed the Louisiana Purchase due to concerns about the power balance between states and the central government, as well as the economic implications.
Step-by-step explanation:
The Federalists opposed the Louisiana Purchase for several reasons. Firstly, they believed that acquiring such a large amount of territory would weaken the power of the existing states and potentially lead to the expansion of slavery, which they saw as a threat to their vision of a strong central government.
Additionally, they were concerned about the financial burden that would come with the purchase and the potential disruption of existing trade relationships. Overall, the Federalists opposed the Louisiana Purchase due to their concerns about the impact it would have on the power balance between the states and the central government, as well as the economic implications.