1. The Oregon Constitution was adopted on March 4, 1859
The constitution of the State of Oregon was adopted on March 4, 1859, which paved the way for Oregon to become the 33rd state of the United States of America on February 14, 1859. The constitution created a government system that consisted of three branches: the executive, the legislative, and the judicial, which remains in place to date.

2. The first woman was elected to the Oregon legislature on March 4, 1914
On March 4, 1914, Democrat Nellie Arkley was elected to the Oregon House of Representatives, making her the first woman to hold a seat in the state legislature. Her election marked a turning point in women’s rights in Oregon and paved the way for more women to hold political offices in the state and across the country.

3. The Tillamook Burn happened on March 4, 1933
On this day, a massive forest fire, known as the Tillamook Burn, began in the Coast Range of Northwest Oregon. The fire raged for more than a month, burning over 300,000 acres of timberland, and was the largest forest fire in Oregon history at the time. The Tillamook Burn resulted in significant environmental, social, and economic consequences for the state.

4. The Oregon State Capitol was dedicated on March 4, 1938
On March 4, 1938, the Oregon State Capitol building was officially dedicated. The structure, which took over six years to build, cost over $2.5 million and was designed by the famed architect Trowbridge and Livingston. The building, which is located in Salem, serves as the seat of government for the State of Oregon and is a significant landmark in the state.

5. Oregon's first black Congresswoman was sworn in on March 4, 1993
On March 4, 1993, DeFazio was sworn in as Oregon's first African American Congresswoman. She served as the representative of the 3rd congressional district from 1993 to 1995. Her election to Congress marked a significant milestone in Oregon's history and demonstrated the increasing diversity of the state.