Many historians consider theodore roosevelt's greatest achievement to be?

Theodore Roosevelt was an outdoorsy person at heart, spending much of his time outdoors as a young child and through all of his life. He became president at a time where the United States was industrializing at a very fast rate. , creating the five national parks, 150 national forests, 51 wildlife refuges. That is why many historians consider his greatest achievement

theodore roosevelt challenged william to a duel, whoever won, got their policy sent to congress. it ended up in a stalemate, and both men were injured and sent to the hospital.