Answer:
The 12-hour clock was developed over time from the mid-second millennium BC to the 16th century AD and was once popular throughout Northern Europe, but is now used as the dominant system in many former British colonies, including the United States and Canada. It is also used informally in most of the world.
Source[s]:
http://en.wikipedia.org/wiki/12-hour_clock
he invented the dynamite or the atom bomb
they invented the first transistor:)
The phonograph was invented in 1878. Thomas Edison invented it.
The crescograph was invented by Sir Jagadish Chandra Bose in 1901. It is a device used to measure the growth of plants.
The slinky was invented in 1943 by Richard James.
jv
invented in 500BC before electricity was invented
The CD was invented in 2001 Thomas clamps invented it.
Gloria Mejia invented it and she invented it in 1998
When and where were snickerdoodles invented Why were snickerdoodles invented
who invented the washboard?
Yes, the computer is invented.
Invented is the past participle of the verb invent. verb /past /past participle = invent /invented /invented
The Chinese invented the Rudder.it was invented by the Chinese
when was sprite invented ! == == when was sprite invented ! == ==
how invented the quad bike how invented the quad bike how invented the quad bike
gargoyles were invented by gargoyles who were invented by gargoyles and so on. This was written by gargoyle.