Question: In the 19th century, Rhea Springs was inundated when the completion of Watts Bar Dam by the Tennessee Valley Authority, a federally owned corporation in the United States created by congressional charter on May 18, 1933 to provide navigation, flood control, electricity generation, fertilizer manufacturing, and economic development to the Tennessee Valley, a region particularly affected by what historical event?
Sentence (from "Tennessee Valley Authority"): The enterprise was a result of the efforts of Senator George W. Norris of Nebraska.
Relevant evidence: No