On July 1, 1908, Theodore Roosevelt signed legislation that created 45 national forests. Roosevelt was a passionate hunter and believed that all the game in America would soon be gone unless something was done to preserve some wild areas. Which era of the environmental movement does this goal belong to?

The environmental movement led by Theodore Roosevelt was part of the much greater Progressive Movement.

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.

Progressive era

Explanation:

T. Roosevelt gave a voice in government to many progressive ideas, including prohibition, better working conditions, the ending of monopolies and trusts, the ending of the Boss system and much of the political corruption in the U. S., and conservation. Each of these, including the environmental conservation which the question focuses on, were part of the progressive era.