Smallest state of USA,Louisiana purchase of 1803....

1. The smallest state of USA is Rhode Island.
2. Arthur Ashe was the first black man to win the US tennis championship.
3. New York was the first US state to require car licences in 1901.
4. Harvard is the oldest university in USA.
5. Bill Tilden was the only player to have won the United States Singles Tennis Championships at Forest Hills seven times.
6. C.C Magee invented the parking meter(in the USA) which was first used in 1935.
7. The metal known as columbium in the USA is called niobium in the UK.
8. Delaware, USA is also referred as Diamond state.
9. As a philanthropic experiment to give debtors from English prisons a chance, General Oglethrope founded the state of Georgia,USA in 1733.
10. US President Thomas Jefferson completed the Louisiana purchase of 1803.