Answer:
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Explanation:
<span>Douglas McCauley argues we should protect natural resources by valuing their cultural significance to humans. His research is based on the study of ecology to advance conservation and looking for creative ways to contact the public and the natural world. </span>
The main territorial area that was purchased in 1853 is now Arizona and New Mexico. The Gasden Purchase bought this area from Mexico for $10 million.
After the Treaty of Guadalupe Hidalgo in 1848, the Rio Grande and Gila River became the border to the south. However, the U.S. wanted more land to the south to continue the expansion of railroads. The railroad companies needed land south of the Gila River.
The 30,000 square mile purchase enabled the South Pacific Railroad to build through that strip of land.
