1. Rhode Island established as a colony: On March 30, 1636, Roger Williams was granted land in the area now known as Providence, Rhode Island. This event led to the establishment of Rhode Island as a colony and marked the beginning of a new era in Rhode Island's history.

2. Rhode Island's first newspaper was published: On March 30, 1732, Rhode Island's first newspaper, the Rhode Island Gazette, was published for the first time. This newspaper was a significant development in the dissemination of news and information in Rhode Island.

3. The first Rhode Island state flag was adopted: On March 30, 1877, the first Rhode Island state flag was adopted. The flag features an anchor and the word "Hope," which signify Rhode Island's maritime heritage and its optimistic spirit.

4. The Rhode Island State House was completed: On March 30, 1904, the Rhode Island State House was completed. This impressive structure is one of the most iconic buildings in the state and serves as the seat of government in Rhode Island.

5. Lowell Davies Festival Theatre was dedicated: On March 30, 1967, the Lowell Davies Festival Theatre was dedicated in Providence, Rhode Island. This outdoor theater has hosted numerous productions over the years, including plays by Shakespeare and other renowned playwrights.