Answer:
The discovery of penicillin is due to the Scottish biochemist Alexander Fleming. During the First World War, Fleming served as a military doctor and could not accept the fact that soldiers wounded after a successful operation still died - from the onset of gangrene or sepsis. After the war ended, Fleming returned to the UK and set out to improve the quality of Lister's antiseptic dressings soaked in carbolic acid. Soon he discovered a natural antiseptic in nasal mucus and called it lysozyme. But it turned out that lysozyme, like carbolic acid, does not penetrate deep enough into the wound, so internal suppuration continued. A few years later, in 1928, having accidentally discovered mold in a Petri dish, studying staphylococcal bacteria (which cause, for example, boils and tonsillitis), Fleming discovered penicillin.
Explanation:
Answer:
includes the westward expansion of the United States, the subjugation of native. American and maxican commities and increased tension between North and Southen political interests
Many people from rural America felt compelled to move to urban areas to find employment; fewer farm workers were needed because methods of farming had improved and more farm work was being done by newly available <em>machinery</em>.
They were assisted by Israel or the supreme