1. On March 31, 1909, the first electric streetcars began operating in Salt Lake City. This new mode of transportation replaced the horse-drawn streetcars and cemented the city's status as a modern and progressive metropolis.

2. The Utah House of Representatives passed a resolution on March 31, 1971, ratifying the 26th Amendment to the U.S. Constitution, which lowered the voting age to 18 years old. The amendment was passed in response to the high number of young men drafted to fight in the Vietnam War who were not allowed to vote.

3. In 1860, on March 31, the Deseret News reported on the discovery of gold in what is now known as the Tintic Mining District. This led to a major mining boom in the area and helped to fuel the economic growth of Utah in the 19th and early 20th centuries.

4. March 31, 1996, marked the opening of the Eccles Theater in downtown Salt Lake City. This state-of-the-art performing arts center has been a major cultural hub for the city and has hosted a wide range of performances, from operas and ballets to concerts and Broadway shows.

5. On March 31, 1919, the Utah House of Representatives passed a bill granting women the right to vote in all elections within the state. This was a significant milestone in the suffrage movement and helped pave the way for the passage of the 19th Amendment to the U.S. Constitution the following year, which granted women the right to vote nationally.