Eli Whitney invented the Cotton gin
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
They choose John Bell of Tennessee....I believe..I hope this helps..
Answer: 1) Cathedral.
Explanation:
The cathedral is a Catholic building in which the archbishop performs his sacred duty of worship. The Pope's Cathedral is the Basilica of St. John Lateran in Rome. The most famous cathedral is probably located in Notre Dame in Paris, which is famous for the novel by Victor Hugo called the bell ringer of the church of Notre Dame. Most of the cathedrals were mostly built in the Gothic architectural style, which is characteristic of many Catholic buildings.
The leaders which were key to the independence movement in South America were b) Simon Bolivar and d) Jose de San Martin. Jose de San Martin "was an Argentine general and the prime leader of the southern part of South America's successful struggle for independence from the Spanish Empire." Simon Bolivar was "a Venezuelan military and political leader who played an instrumental role in the establishment of Venezuela, Ecuador, Bolivia, Peru, and Colombia as sovereign states, independent of Spanish rule."
