Final answer:
The Gadsden Purchase was a land deal in which the US acquired a strip of land from Mexico in 1853. It helped to establish the final boundaries of the continental US and facilitated the construction of a southern transcontinental railroad route.
Step-by-step explanation:
The Gadsden Purchase was a land deal between the United States and Mexico in which the US acquired a strip of land in present-day Arizona and New Mexico. The purchase was made in 1853 and it was named after James Gadsden, the American diplomat who negotiated the deal. The Gadsden Purchase was significant because it helped to establish the final boundaries of the continental United States and facilitated the construction of a southern transcontinental railroad route.
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