The ural mountains serve as natural boundary between

Ural Mountains. The Ural Mountains have long been considered the traditional boundary/dividing line between Europe and Asia. ... In many respects, the Urals remind me of the Appalachian Mountains in the eastern United States, also old and considerably eroded. The Urals do not form a natural barrier between Europe and Asia. hope this helps please rate brainliest

i think its toxic gasses but i could be wrong

citizens were able to charge more for their goods and services