comunication and history

petroglyphs

Jan 1, 1700

about 90% of monuments petroglyphs were created by are acestors. and there was about 25,000 petroglyphs were recorded.

computer

Jan 1, 1940

konrad Zuse finished the Z3 cumputer. it was german engineering the Z3 was destoryed by the bomb raid at berlin.

internet

May 31, 1961

not only one person invented the internet it was the help of alot of people

cave drawings

Dec 18, 1994

skype

Aug 29, 2003

it was used to talk to people across the world. and it was made by
Estonians Ahti Heinla.

facebook

Feb 8, 2004

face book is an online social networking servcie headquarterded in Menlo park calafornia some students gave it the name at a american uniersitey.