On December 8th:

 1941  The United States Enters World War II

Following the attack on Pearl Harbor, the United States officially entered World War II on December 8th, 1941, by declaring war on Japan. This marked a pivotal moment in global history.

 1980  John Lennon’s Tragic Passing

On this poignant day in 1980, legendary musician and former Beatle John Lennon was tragically shot and killed outside his apartment in New York City. His untimely death marked the end of an era in music history.

 1993  The North American Free Trade Agreement (NAFTA) is Signed

On December 8th, 1993, leaders from the United States, Canada, and Mexico signed the North American Free Trade Agreement, a significant accord that aimed to promote economic cooperation and trade between the three nations.