What significant events happened after John Muir died?

After John Muir's death in 1914, several significant events unfolded that impacted conservation and the environment. The National Park Service was established in 1916, promoting the preservation of natural landscapes, influenced by Muir's advocacy for national parks. Additionally, the establishment of the Sierra Club, which Muir co-founded, continued to grow and play a pivotal role in environmental activism, leading to various conservation victories. The 1964 Wilderness Act, which Muir's ideas helped inspire, further protected vast areas of wilderness across the United States.