Probably tuberculosis. At times, 1/3 of non-infant deaths in Europe or North America may have been caused by it. Even today, about 1/3rd of humanity carries the TB bacterium, but in most people there is no illness, it remains latent or disappears.
Infectious Disease
No
HIV/AIDS posed a public health threat since early 1990sHIV/AIDS has posed a public health threat since the early 1990s
in late 1800s and early 1900s the industrial revolution took place
Both had policies of empire-building in the Pacific in the early 1900s.
Both had policies of empire-building in the Pacific in the early 1900s.
Both had policies of empire-building in the Pacific in the early 1900s.
Germany and Great Britain were involved in a naval rivalry in the early 1900s.
buffaloes were killed near extinction in the early 1900s
Railroad tracks that were built in the early 1900s were constructed from steel. The steel was used to replace rail tracks and railway cars that were built from iron prior to the early 1900s.
in the early 1900s
In the early 1900s