Final answer:
The founding fathers were wary of legislative tyranny due to Congress's powers to create laws, control the federal budget, and declare war. Checks and balances were implemented to prevent any single branch from becoming dominant.
Step-by-step explanation:
The founding fathers were concerned about the potential for tyranny in the legislative branch due to several key powers it possessed. Firstly, Congress has the power to enact legislation, effectively shaping the laws that govern society. Secondly, Congress has control over the federal budget and financial matters, which gives it considerable influence over the country's fiscal policies. Finally, Congress has the power to declare war, a significant authority that can have profound consequences.
The system of checks and balances was created to ensure that no single branch of government, including the legislative branch, could dominate or become tyrannical. However, given the legislature's broad authority, the Founders were particularly vigilant about its potential to overpower the other branches, impacting the freedoms and liberties of citizens, as had been their experience under British rule prior to independence.