The land between rivers, the euphrates and the tigris rivers
Answer: a promise to be loyal to the US that is said especially by American children at school at the start of each day.
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
A or B I just did this, ummm yea, cause she became a monk for the rest of her life converting people to monk and making the places where monks live.
Sorry I dont have an exact answer.