Chinese invented paper 170 B.C.
A square mile contains 640 acres.
A barrel of pork weighs 200 pounds.
Hawks can fly 150 miles in one hour.
Watches were first constructed in 1476.
Chinese in United States in 1880, 105,613.
Rome was founded by Romulus, 752 B.C.
Gold was discovered in California in 1848.
Phonograph invented by T. A. Edison, 1877.
The first balloon ascended from Lyons, France, 1783.