i think you mean antibiotic ... but Alexander Fleming was the one who advanced the antibiotic (world) and was responsible for creating these categories of medicine... this affected the 20th century because millions of people use antibiotics everyday and without them... many diseases would still affect people without a cure
In order to balance the power of the majority rule in the American democracy, it has to follow the rights of the minorities. In this way, conflicts between the majority and the other minorities will never happen so then it can sustain peace in society.
Since the partition of British India in 1947 and creation of modern States of India and Pakistan, the two South Asian countries have been involved in four wars, including one undeclared war, and many border skirmishes and military stand-offs.
The Kashmir issue has been the main cause, whether direct or indirect, of all major conflicts between the two countries with the exception of the Indo-Pakistani War of 1971 where conflict originated due to turmoil in erstwhile East Pakistan (now Bangladesh).
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.