This document summarizes Brazil's transition from military authoritarianism to democracy between 1964-1989. It outlines the key leaders and events during the military regime including controlled two-party system and restrictions on opposition. It then discusses the challenges faced by the new civilian government in the 1980s including economic issues and traditional political elites resisting change. The transition culminated in the elections of 1989 where Fernando Collor narrowly defeated Lula, marking the establishment of a new democratic order.