Strict constructionists and loose constructionists differ over whether the government's powers should be limited to those specifically enumerated powers. Strict constructionists read the Constitution as giving the federal government only those specifically delegated powers. Loose constructionists argue that anything not specifically forbidden by the constitution can be within the window of what the government needs to do in adapting to the needs of time and circumstances.
the most significant developments were the use of stone tools for hunting and gathering. Toward the end of hunter/gatherer societies they developed the use of agriculture and the domestication of plants and animals which led to the end of nomadic lifestyles.
President Woodrow Wilson. President Woodrow Wilson established the National Park Service in 1916 to consolidate management of America's federal parklands under one agency.