How did the number of states change from the map of 1787 the map of present day states?

In 1787, the United States consisted of just 13 states, all located along the eastern seaboard. Over the following centuries, the country expanded westward, incorporating new territories and states through various means, including treaties, purchases, and wars. As a result, the number of states grew to 50 by the present day, reflecting the country's territorial evolution and population growth. This transformation marked the transition from a small collection of colonies to a vast, diverse nation.