Why did Roosevelt believe that US involvement in Latin America was so important?

Explanation:

 Roosevelt believed that in light of the country’s recent military successes, it was unnecessary to use force to achieve foreign policy goals, so long as the military could threaten force. This rested on the young president’s philosophy, which he termed the strenuous life, and that challenges overseas as opportunities to provide American men with the solution they had once acquired in the Trans-Mississippi West.