What was unique about the physical geography of the Oaxaca Valley? It contained a vast system of caves.
o It sat on top of an active volcano.
It sat thousands of feet above sea level.
O It contained mostly swamps and jungles.

It Sat on top of an active Volcano

Explanation:

I'm pretty sure it is B.) It sat on top of an active volcano

Explanation:

Edge 2021 :)

i do not know if this question has options, but a main impact of the federal reserve act of 1913, which created the federal reserve bank, was the international use of the u.s. dollar, which soon became the world's leading currency - particularly during world war i, since many nations around the world asked the united states for money.

peasants’ war, (1524–25) peasant uprising in germany inspired by changes brought by the reformation, peasants in western and southern germany invoked   divine law to demand agrarian rights and freedom from oppression by nobles and landlords. as the uprising spread, some peasant groups organized armies. although the revolt was supported huldrych zwingli and thomas müntzerits condemnation by martain luther contributed to its defeat, principally by the army of the swabian league. some 100,000 peasants were killed. reprisals and increased restrictions discouraged further attempts to improve the peasants’ plight.

i think it would be " a" i might be wrong tho