In the context of the Compromise of 1850, 'passage' refers to the approval and enactment of the legislative measures that aimed to resolve conflicts between slave and free states. This legislation included a series of bills that were designed to maintain the balance of power between North and South, addressing contentious issues such as the status of territories acquired from Mexico and the enforcement of fugitive slave laws. The successful passage of these laws was a crucial moment in American history as it sought to quell rising tensions over slavery.