1. On February 12, 1793, George Washington held the first cabinet meeting in American history. The meeting was held in his presidential mansion in Philadelphia, which was then the national capital. Washington's cabinet consisted of Secretary of State Thomas Jefferson, Secretary of the Treasury Alexander Hamilton, Secretary of War Henry Knox, and Attorney General Edmund Randolph.

2. On February 12, 1865, Abraham Lincoln signed the 13th Amendment to the United States Constitution, which abolished slavery and involuntary servitude. The amendment was ratified by the required number of states in December of that same year.

3. On February 12, 1912, the city of Seattle experienced one of the worst blizzards in its history. Over 16 inches of snow fell in a 24-hour period, bringing the city to a standstill. The snow and cold disrupted transportation and caused power outages, leading to widespread public inconvenience and private suffering.

4. On February 12, 1938, the Washington State Legislature passed a bill creating the Grand Coulee Dam Authority. The authority was tasked with overseeing the construction of the Grand Coulee Dam on the Columbia River. The dam, which was completed in 1942, is one of the largest concrete structures in the world today.

5. On February 12, 1999, the Washington State Supreme Court ruled that the state's ban on same-sex marriage did not violate the state constitution. The case, Andersen v. King County, was brought by seven same-sex couples who had been denied marriage licenses by King County officials. The ruling was later overturned by the state legislature in 2012, allowing same-sex marriage in Washington state.