Theodore Roosevelt had a varied career before becoming the 26th President of the United States. He held many jobs including ranch owner, police commissioner, Assistant Secretary of the Navy, and Governor of New York. In 1901, Roosevelt became President after McKinley was assassinated. As President, Roosevelt ushered in many progressive reforms and greatly expanded the powers of the presidency. He also took a more interventionist approach to foreign policy and helped negotiate an end to the Russo-Japanese War. After leaving office, Roosevelt went on several adventures including a safari in Africa and exploring the Amazon rainforest. He remained politically active until his death in 1919.