which treaty is related to this place?
UNANSWERABLE
who negotiated the purchase of the area south of gila river UNANSWERABLE what do you mean by this purchase? It is a region of present-day southern Arizona and southwestern New Mexico. is there any person after whom this area is named? James Gadsden who was this person? An American diplomat, soldier and businessman. why is the above place related to him? The first draft was signed on December 30, 1853, by him. for what was this draft signed? For the purchase included lands south of the Gila River and west of the Rio Grande. where is this mentioned river located? United States which dam is built over it? Coolidge Dam is the river used for any recreational purpose? It is navigable during spring snowmelt and after summer and autumn storms. regarding the purchase place; is there any railroad constructed over there? Yes, South Carolina Railroad.
wiki:1135056
Gadsden Purchase [SEP] Railroad development
In 1846, James Gadsden, then president of the South Carolina Railroad, proposed building a transcontinental railroad linking the Atlantic at Charleston with the Pacific at San Diego. Federal and private surveys by Lt. John G. Parke and Andrew B Gray proved the feasibility of the southern transcontinental route, but sectional strife and the Civil War delayed construction of the proposed railroad. The Southern Pacific Railroad from Los Angeles reached Yuma, Arizona, in 1877, Tucson, Arizona in March 1880, Deming, New Mexico in December 1880, and El Paso in May 1881, the first railroad across the Gadsden Purchase. At the same time, 1879-1881, the Atchison, Topeka and Santa Fe Railroad was building across New Mexico and met the Southern Pacific at Deming, New Mexico March 7, 1881, completing the second transcontinental railroad (the first, the central transcontinental, was completed May 10, 1869 at Promontory Summit, Utah).