Why did WL Mackenzie King resign?

W.L. Mackenzie King resigned as Prime Minister of Canada in 1948 primarily due to his declining health and the growing pressure within the Liberal Party for new leadership. He had served multiple terms and was facing challenges related to post-war issues and the rise of new political movements. His decision to step down paved the way for his successor, Louis St. Laurent, to take over the leadership of the party and the country. King's resignation marked the end of an era in Canadian politics.