Answer:
in sub-Saharan Africa AIDS is the leading killer and a large reason for the high transmission rates is because of the lack of education provided to youth. When infected, most children die within one year because of the lack of treatment.
It peaked in Europe between 1348 and 1350 and is thought to have been a bubonic plague outbreak caused by Yersinia pestis, a bacterium. It reached the Crimea in 1346 and most likely spread via fleas on black rats that travelled on merchant ships. It soon spread through the Mediterranean and Europe
