1. On February 25, 1869, the Wyoming territorial legislature passed the first law in the United States granting women the right to vote. This was a significant step in the women's suffrage movement and led to Wyoming becoming the first state to grant women the right to vote in 1890.

2. In 1925, the Wyoming State Legislature established the University of Wyoming's Department of Petroleum Engineering. This was the first department of its kind in the world and helped establish Wyoming as a major producer of oil and gas.

3. On February 25, 1870, the first post office in Laramie, Wyoming was established. This helped facilitate communication and commerce between Laramie and other parts of the country.

4. In 2008, Wyoming's Grand Teton National Park was designated as a Dark Sky Park by the International Dark-Sky Association. This designation recognizes the park's efforts to limit light pollution and preserve the natural beauty of its night sky.

5. On February 25, 1909, Wyoming governor Bryant B. Brooks signed a bill creating the Wyoming Game and Fish Department. This agency has been instrumental in conserving Wyoming's wildlife and promoting sustainable hunting and fishing practices.