1. In 1857, the Providence Chocolate Company was established on March 6 by Samuel Slater Jr. The company quickly became one of the largest producers of chocolate in the United States and is credited with popularizing milk chocolate in America.

2. On March 6, 1974, the Rhode Island Department of Transportation opened the first section of Route 4, a major highway connecting Providence to southern Rhode Island. The highway was built to alleviate traffic congestion and improve connectivity in the state.

3. In 1900, on March 6, Rhode Island became the first state in the United States to pass a law prohibiting the sale of cigarettes to minors under the age of 16. The law was later amended to increase the age limit to 18.

4. The Rhode Island State House, a prominent landmark in Providence, was dedicated on March 6, 1901. The building was designed by architect Charles Follen McKim and is considered one of the most impressive state capitol buildings in the country.

5. On March 6, 1834, the Providence and Worcester Railroad was incorporated by the Rhode Island legislature. The railroad played a key role in the state's industrial development and remained in operation until 2021, when it was acquired by a larger rail company.