Final answer:
Theodore Roosevelt's program of progressive reforms was known as the New Nationalism, which was a key part of his 1912 campaign under the Progressive Party.
Step-by-step explanation:
The program of progressive reforms introduced by President Theodore Roosevelt was known as the New Nationalism. This was a part of Roosevelt's campaign when he ran for another term as President in 1912 after his presidency, under the banner of the Progressive Party.
Although he did not win the election, the Progressive Party's influence extended beyond the campaign and continued to shape American political discourse. Similarly, President Woodrow Wilson introduced his own set of progressive reforms called the New Freedom, which focused on breaking down the 'triple wall of privilege' which consisted of tariffs, trusts, and high finance.