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
Trade with the Arabs did a few things for the African kingdoms. It increased trade, profit, and led to a ruling class.
Hope this Helps! :)
I think it’s B, the great plains are known for amazing farmland
Answer:
The number is equal to 62
Explanation:
Hmmm I have to look that up cause anyways fly you to the moon like John cook
