Question

geography
which us state has the longest border with mexico?
california
new mexico
arizona
texas

Explanation:

Texas shares a border with Mexico that is approximately 1,254 miles (2,018 kilometers) long. This is longer than the borders of California (approximately 140 miles or 225 kilometers), Arizona (approximately 389 miles or 626 kilometers), and New Mexico (approximately 180 miles or 290 kilometers).

Answer:

Texas