<h1>Canada's 23rd Prime Minister Resigns After Nine Years: Legacy of Social Policy and Navigating Political Challenges.</h1> Canada's 23rd Prime Minister has resigned after over nine years in office, leaving a significant legacy in social policy. His administration legalized cannabis, permitted medical aid in dying, and introduced dental care, pharmacare, and subsidized child care. Despite never facing electoral defeat, he resigned amid declining support within his party and the challenge of securing a fourth term. His tenure included navigating minority governments, dealing with three U.S. presidents, and managing the COVID-19 pandemic. His personal life saw changes, including the end of his marriage. At 53, he may pursue new opportunities outside politics.