January 31 is a significant day in New Jersey's history, with several interesting events dominating the pages of history. Here are five interesting facts about January 31 in New Jersey's history:

1. The Battle of Trenton was fought on January 31, 1777. During this battle, American forces defeated the Hessian troops stationed in Trenton, New Jersey. The victory was a turning point in the American Revolutionary War.

2. On January 31, 1865, the Thirteenth Amendment to the U.S. Constitution was passed by the U.S. House of Representatives, outlawing slavery and involuntary servitude in the United States.

3. On January 31, 1936, the first-ever American ski lift opened at New Jersey's Campgaw Mountain Ski Resort. The ski resort is located in Mahwah, New Jersey, and is still operational today.

4. January 31, 1949, was the date when the famous heavyweight boxing champion Rocky Marciano had his first fight in Jersey City, New Jersey. The fight lasted a full six rounds before Marciano won by a technical knockout.

5. On January 31, 1958, during a severe winter storm, the ocean liner SS Andrea Doria sank after colliding with another ship off the coast of New Jersey. Over 1,600 people were rescued, but 46 crew members and passengers lost their lives in the accident.

In conclusion, January 31 holds a significant place in New Jersey's rich history, with several memorable events that are still remembered today. From the decisive Battle of Trenton to groundbreaking skiing technology, the state has a lot to offer, making January 31 a crucial day to remember.