Question

Which of these describes why Samarkand and Bukhara were important trade centers on the Silk Road?

They were high-altitude cities in passes in the mountains.

They were low-altitude cities in the fertile plain of the Indus River.

They were low-altitude cities in valleys that cut through mountains.

They were high-altitude cities in the fertile plain of the Indus River. @hmundy

Answer 1

the second one