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
<span>11,000 British troops and some 1,000 Loyalists departed Boston by ship on March 17, sailing to Halifax, Nova Scotia.
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Collecting taxes and declaring War
Hope this helps!
Al the following occurred except 1 2 and 3 and 4
They liked their buildings to be symmetrical/balanced, and beautiful with clean lines.
hope this helps have a great day
mark brainliest :)!!