Question: Who was the Senator behind the corporation that served as the model for the Helmand and Arghandab Valley Authority?
Sentence (from "Tennessee Valley Authority"): The Tennessee Valley Authority (TVA) is 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 the Great Depression.
Relevant evidence: No