1. In 1789, President George Washington took the oath of office on the balcony of Federal Hall in New York City, becoming the first President of the United States. The event marked a pivotal moment in American history and established the precedent for the peaceful transfer of power that continues to this day.

2. On April 23, 1910, Theodore Roosevelt delivered his famous "Citizenship in a Republic" speech at the Sorbonne in Paris, France. The speech, which came to be known as "The Man in the Arena," emphasized the importance of individual initiative and courage in the face of adversity.

3. In 1971, the first Earth Day was celebrated in New York City, marking the beginning of the modern environmental movement. The event was organized by Wisconsin Senator Gaylord Nelson as a way to raise awareness about environmental issues and promote sustainability.

4. On April 23, 2005, the new Yankee Stadium opened its doors for the first time, marking a new era for one of New York City's most iconic sports franchises. The stadium, which replaced the team's previous home at the original Yankee Stadium, featured state-of-the-art amenities and seating for over 50,000 fans.

5. In 2015, New York City Mayor Bill de Blasio announced a plan to overhaul the city's affordable housing policies, which had become increasingly outdated and ineffective in the face of rising housing costs. The plan, which included the construction of new affordable housing units and the preservation of existing units, aimed to address the city's growing housing crisis and provide more opportunities for low- and middle-income residents to secure safe, affordable housing.