 
 <prompt> The United States Geological Survey (USGS, wey bin dey simply Geological Survey) na one scientific agency of the United States government. The scientists of the USGS dey study the landscape of the United States, its natural resources, and the natural hazards wey dey threaten am. The organization get four major science disciplines, concerning biology, geography, geology, and hydrology. The USGS na fact-finding research organization wey no get regulatory responsibility.

The USGS na bureau of the United States Department of the Interior; na that department's sole scientific agency. The USGS employ approximately 8,670 people and e dey headquartered for Reston, Virginia. The USGS still get major offices near Lakewood, Colorado, for the Denver Federal Center, and Menlo Park, California.

The current motto of the USGS, wey dem dey use since August 1997, na "science for a changing world." The agency's previous slogan, wey dem adopt for the occasion of its hundredth anniversary, na "Earth Science in the Public Service."

Prompted by a report from the National Academy of Sciences, the USGS bin dey created, by a last-minute amendment, to an act of Congress on March 3, 1879. Dem give am the task to "classify the public lands, and examine the geological structure, mineral resources, and products of the national domain". This task bin dey driven by the need to inventory the vast lands wey dem add to the United States by the Louisiana Purchase for 1803 and the Mexican–American War for 1848. <response>: 1. Mexican–American War
2. Yes
3. August 1997
4. science for a changing world.
5. Earth Science in the Public Service.
6. Yes
7. four
8. biology, geography, geology, and hydrology.
9. March 3, 1879.
10. an amendment to an act of Congress
11. No
12. the need to inventory the vast lands added to the United States by the Louisiana Purchase in 1803 and the Mexican–American War in 1848.
13. the National Academy of Sciences
14. 8,670
15. Reston, Virginia
16. Yes
17. Three
18. Lakewood and Denver, Colorado, and Menlo Park, California.
19. Yes 