What two rivers are east of the Ural Mountains ?

Almost all the rivers of the eastern slope belong to the Ob River system, emptying into the Kara Sea. The largest are the Tobol, the Iset, the Tura, the Tavda, the Severnaya (Northern) Sosva, and the Lyapin. The Kama (a tributary of the Volga) and the Ural rivers belong to the drainage basin of the Caspian Sea.

first industrial revolution - the first wave of the industrial revolution lasted from the late 1700s to the mid-1800s. it industrialized the manufacture of textiles and began the move of production from homes to factories. steam power and the cotton gin played an important role in this period.

the answer is b: an economic crisis throughout the country.