Majority rule is essential in a democracy as it supports the principle that decisions reflect the will of the majority while protecting minority rights. This system fosters accountability, as elected representatives must consider the preferences of their constituents. The majority's power to enact laws is balanced by safeguards that ensure all voices are heard, thus promoting social cohesion. Additionally, majority rule encourages participation by providing a mechanism for individuals to influence the political process, reinforcing the legitimacy and stability of governmental institutions.