1. The Birth of Roger Williams: May 28, 1603 marks the birth of Roger Williams, the founder of Rhode Island. Williams was a theologian and a notable advocate for religious freedom, which was a radical idea in the 17th century. He established a colony in what is now Providence, which became a haven for people of all religions.

2. Rhode Island General Assembly Established: On May 28, 1663, the Rhode Island General Assembly was established, making Rhode Island the first colony to allow religious freedom and separating church from state. This was a major milestone in the history of the state, as Rhode Island became a beacon for religious tolerance and democratic principles.

3. Rhode Island Adopts a Constitution: On May 28, 1843, Rhode Island adopted its first constitution, which granted suffrage rights to all white men, abolished property qualifications for voters, and established a bicameral legislature. The constitution was a significant milestone in the state's history, as it established a more representative form of government that adhered to democratic principles.

4. The Dedication of The Breakers: On May 28, 1895, The Breakers, one of the most famous mansions in Newport, Rhode Island, was dedicated. The mansion, which was built for Cornelius Vanderbilt II, is one of the quintessential examples of the Gilded Age architecture that characterized the wealthy elite in the late 19th century. Today, the mansion is open to visitors as a museum.

5. The Great Rhode Island Tidal Wave: On May 28, 1938, a severe hurricane swept along the coast of New England, causing a massive tidal wave that devastated the towns along the coast of Rhode Island, Connecticut, and Massachusetts. The tidal wave destroyed homes, bridges, and boats, and killed over 700 people. The hurricane was one of the deadliest and most destructive natural disasters in the history of Rhode Island.