President Theodore Roosevelt was disappointed in President William Howard Taft's Presidency because Taft's policies were different from Roosevelt's progressive agenda. Roosevelt had wanted to continue his progressive policies, but Taft had a more conservative approach to governing.
Some of the key differences in their policies were:
1. Conservation: Roosevelt believed in protecting natural resources and wanted to preserve them for future generations. Taft, however, wanted to develop natural resources to increase economic growth.
2. Trust-busting: Roosevelt was in favor of breaking up monopolies to promote competition. Taft, on the other hand, believed in regulated monopolies.
3. Foreign policy: Roosevelt promoted strong American expansionist policies while Taft wanted to avoid overseas conflicts.
These differences led to Roosevelt breaking from the Republican Party and forming his own Progressive Party, which resulted in a split in the Republican vote and helped Democrat Woodrow Wilson win the presidency.