The Environmental Movement emerged in the late 19th and early 20th century in response to the industrialization and urbanization that was leading to pollution, deforestation, and other ecological problems. The conservation movement, led by figures such as John Muir and Theodore Roosevelt, focused on preserving natural resources and establishing national parks. The modern environmental movement began in the 1960s and 1970s, sparked by concerns about pollution, endangered species, and ecological destruction. This movement led to the creation of major environmental laws and organizations, such as the Clean Air Act and the Environmental Protection Agency in the United States.
