did you know.....

did you know that the place most lower of the earth is the dead sea with 304 m under the level of the sea???... How??? i don't know.
did you know that the china wall was made for the first emperor: Chin. He got a very small land, but he make a great army and conquer almost everything, and he unify the currency,the euro. Chin only build 6,400 km in 12 years and then an other 2 emperors biuld the rest (17,100m). and during the second empire, they start using the smoke sign.