Explain what you consider to be the most important events in the development of environmental awareness in the United States.

Most essential development in the environmental history of United States, is the conservation policies introduced by president Theodore Roosevelt.

Explanation:

The US is today organized by large environmental movements called the NGOs that exist on all national, international and local levels. The first view that reflected to take into account the environment was those president Roosevelt Who was motivated by the beauty of the landscape and the toll hunting took on the natural reserves. He became a conservationist in putting the issues of the environment first, he along with his advisor Gifford Pinchot gave the Newlands reclamation act in 1902 and gave federal lands for the development of natural parks and reserves. He then established (USFS) United states forest services, and proclaimed 18 national monuments, and established 51 bird life sanctuaries including game reserves.