Historical milestones are significant events or achievements that mark important changes or developments in history. These milestones can include the signing of important documents, such as the Declaration of Independence, or the invention of groundbreaking technologies, like the printing press. They often shape the course of nations and influence cultural, social, and political landscapes. Examples of historical milestones include the fall of the Berlin Wall in 1989, which symbolized the end of the Cold War, and the Civil Rights Act of 1964, which aimed to eliminate discrimination in the United States. Such events are crucial for understanding the evolution of societies and their values over time.