Short Answer 
President Theodore Roosevelt significantly advanced conservationism during his presidency by prioritizing the protection of the nation’s resources and establishing around 230 million acres of public lands. His initiatives led to the creation of national parks and the establishment of the United States Forest Services, laying the foundation for ongoing conservation efforts and environmental sustainability.
Step 1: Introduction to Conservationism
President Theodore Roosevelt introduced the concept of Conservationism during his presidency, making it a central focus of his administration. He recognized the urgent need to address the depleting environmental conditions and prioritize the protection of the nation’s resources. His efforts marked a significant shift in governmental policy towards environmental sustainability.
Step 2: Establishing Public Lands and Wildlife Protections
During his term, Roosevelt conserved approximately 230 million acres of public lands, which included the creation of national forests, parks, and wildlife reserves. He established the first Federal Bird Reserve and emphasized the importance of sustainable agricultural practices. Key actions included:
- Prohibiting the clearing of forests.
- Establishing national parks and game reserves to protect wildlife.
- Raising public awareness about the value of natural resources.
Step 3: Legislative Actions and Lasting Impact
Roosevelt’s commitment to conservation led him to sign the Act for the Preservation of American Antiquities, protecting historic and scientific landmarks. His initiatives not only safeguarded the ecological balance but also laid the groundwork for future conservation efforts. Major impacts included:
- Establishment of the United States Forest Services.
- Initiation of breeding projects to maintain species balance.
- Long-lasting protections that continue to benefit the environment today.