The river situated along the border between the United States of America and Mexico is -

Question

UnlockIAS · Accepted Answer

Correct — D, The Rio Grande. The Rio Grande (called Rio Bravo in Mexico) forms a large part of the international boundary between the United States and Mexico, running from around El Paso/Ciudad Juarez down to the Gulf of Mexico and marking the entire Texas-Mexico border. So the border river is the Rio Grande.

Why the other options are wrong — (a) The Colorado flows through the south-western USA and into Mexico near its mouth, but it does not run along the US-Mexico border as a boundary river the way the Rio Grande does.  (b) The Mississippi is a major internal US river draining the central plains into the Gulf of Mexico; it lies wholly within the United States and touches no international border.  (c) The Amazon is in South America (mainly Brazil, Peru, Colombia) — a different continent altogether, nowhere near the US-Mexico frontier.

Concept: Rivers often serve as international boundaries. The Rio Grande / Rio Bravo is the classic North American example: since the 1848 Treaty of Guadalupe Hidalgo it has defined the boundary between Texas (USA) and Mexico, flowing roughly 3,000 km from Colorado to the Gulf of Mexico.

State PCS 2023 Q97 — Geography PYQ with Answer

State PCS 2023 Q97 — Geography PYQ with Answer