Final answer:
William Jennings Bryan was the populist politician and presidential candidate who promoted creationism in the 1920's. He was also appointed as Secretary of State by Woodrow Wilson.
Step-by-step explanation:
The populist politician and presidential candidate who promoted creationism in the 1920's was William Jennings Bryan. Bryan, a three-time presidential candidate, began preaching across the country about the dangers of secularism and the decline of religion in education after his tenure as Woodrow Wilson's Secretary of State. Notably, Bryan participated in the famous Scopes Trial as part of the prosecution to defend the creationist perspective, opposing the teaching of evolution in schools. He was known for his conservative religious views and influence on the fundamentalist movement during that era.
To answer the review question, Woodrow Wilson appointed William Jennings Bryan as Secretary of State to align with his goal of using American influence overseas only when it was a moral imperative. Bryan's role in Wilson's administration and his efforts in spreading his ideals reflected the influence he had on the American political and social landscape.