1. On March 7, 1872, King David Kalakaua signed the Reciprocity Treaty with the United States. This treaty allowed Hawaiian sugar to be sold in the US duty-free, leading to a boom in the industry and increased American influence in Hawaii.

2. In 1942, on March 7th, the first Pacific theater Medal of Honor of World War II was awarded to Private Joseph P. Martinez, a Hawaiian-born soldier. Private Martinez was cited for his bravery in leading an assault against Japanese lines in the Philippines.

3. On March 7, 1959, the Hawaii Statehood Commission held its inaugural meeting in Honolulu. This was the first step in the process which would lead to Hawaii becoming the 50th state of the United States on August 21st of that year.

4. In 1975, on March 7th, the Hawaii State Legislature passed a bill legalizing abortion, making it only the fifth state in the nation to do so.

5. On March 7, 2011, the Hawaii State House of Representatives approved a bill legalizing civil unions for same-sex couples, making Hawaii the seventh state to do so. The bill was signed into law by Governor Neil Abercrombie later that same month.