The reason that transformed U.S Politics in the 1920s is the ascent of progressive politicians. The correct answer is option B. This period was known as the Progressive Era. This transformed the U.S Politics because its aim was to eliminate the corruption in the government.
Supreme Court should be the right answer
The best selection appears to be lower prices for consumers.
It was all due to lack of regulation of the financial sectors, fraud on some energy companies, not enough margin, etc.
Good luck :)
