Answer:
- To provide support against outside threats
- To provide protection in case of attack
-To discourage other countries from attacking
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
The British were the ones who won. Hope this helps!