1. In 1900, the Eagle Historical Society was established in Eagle, Alaska. It is the first historical society in Alaska.

2. In 1901, the Tanana Valley Railroad was established in Fairbanks, Alaska. The railroad played a significant role in the gold rush of the early 20th century.

3. In 1938, an earthquake with a magnitude of 7.4 struck the Aleutian Islands in Alaska. The earthquake caused a tsunami that affected the coast of Alaska and Hawaii.

4. In 1964, Alaska was hit by a devastating earthquake with a magnitude of 9.2. The earthquake was the largest recorded in North America and caused widespread damage and loss of life.

5. In 1986, the Exxon Valdez oil spill occurred in Prince William Sound, Alaska. The spill was one of the worst environmental disasters in United States history and had a significant impact on the environment and wildlife in the region.