Answer: its b
Explanation: The bacterium that causes the bubonic plague is called yersinia pestis. It can survive in rodent populations and is spread to other mammals, including humans, through flea bites. ... The 1330s outbreak also spread west across Central Asia via traders using the Silk Road.
Droughts and severe winters were the main problems facing western cattle barons
The Kalahari Desert comprises two-thirds of Botswana's land
