A bicameral legislature resolved the tension between the states because they couldn't agree on the size of the Congress because of different states' sizes. The main conflicts were between large and small states.
Explanation:
The bicameral legislature helped to equilibrate representation in Congress. The Senate has two senators per state and the House of Representatives is composed of representatives proportional to states' populations.
The idea of a bicameral legislature also helped to carry forward the system of checks and balances between powers. A unilateral legislature would create a potential for power concentration.
