Question: Who authorized the construction of the boulder dam?
Disambiguated questions and answers: question: Who authorized team of engineers to review the construction of the boulder dam?
Who authorized the construction of the boulder dam was feasible?
Who authorized the bill for the construction of the boulder dam?
answer: Congress
a board of engineers
The Colorado River Board
Coolidge
President Coolidge
Calvin Coolidge
Natural Questions answer: President Coolidge (from the Wikipedia article "Hoover Dam")