1. Oregon Became a State: March 1, 1859 was an important day in Oregon's history as it marked the day when Oregon officially became a state. It was the 33rd state to join the Union.

2. Mount Hood's Eruption: On March 1, 1859, Oregon's tallest mountain, Mount Hood erupted for the first and only time in modern history. The eruption did not cause any casualties or significant damage but created a spectacular meteorological phenomenon known as a "sulfur sunrise".

3. The Dalles's Chinese Massacre: In the year 1887, Oregon witnessed one of its darkest chapters in history when a white mob attacked and killed 31 Chinese workers in the town of The Dalles. The massacre took place on March 1 of that year and opened the eyes of many to the deeply ingrained prejudice against the Chinese in the western United States.

4. The Battle of Abiqua Creek: During the early years of Oregon's settlement, many Native American tribes fiercely resisted the encroachment of white settlers on their lands. On March 1, 1848, one such battle was fought near Abiqua Creek in what is now Marion County, Oregon. The battle took place between the native Kalapuya tribe and a group of white settlers, with casualties on both sides.

5. The Powell Expedition: John Wesley Powell's famous expedition through the Grand Canyon began on March 1, 1869. The expedition, which explored the unknown territory of the Colorado River, started in Green River, Wyoming and ended three months later in the Mormon settlement of Kanab Creek, Arizona. Powell's expedition was one of the most important early explorations of the American West and helped to lay the groundwork for future scientific and ecological studies of the region.