In this task, You are given an open-domain question that can be answered based on factual information. Your task is to provide \*short\* answer (in a few words only) for the given question. The short answer can be one or more entities or it can also be boolean \*yes\* or \*no\*.
--------
Question: who owned nevada before it became a state

Answer: Mexico


Question: who led an expedition to explore the louisiana territory

Answer: Lewis and Clark


Question: who authorized the construction of the boulder dam

Answer:
President Coolidge