Answer:
The environmental movement led by Theodore Roosevelt was part of the much greater Progressive Movement.
Step-by-step explanation:
The Progressive Era in the United States was a period of strong social activism and political reform, that lasted between the 1890s and the 1920s. During this era, Jane Addams and steel magnate Clayton Mark sought to address social and political problems. At the same time, female suffrage was introduced.
The reason for intensified reforms in the early twentieth century was the desire of many social groups in the United States to solve the problems arising from rapid industrialization and urbanization that took place after the end of the Civil War. The problems that plagued America in the late nineteenth and early twentieth centuries were the spread of slums, poverty, the use of labor, and the distribution of democratic governance in large cities and individual states.