4. •The Information Revolution
refers to a period of
progressive computer
development which greatly
increased the spread and
accessibility of information.
8. Printing Press
• prior to the invention
of printing press in
1439
scrolls and book were
essentially the single
form
of recording textual
information
9. Electric Telegraph
• Electric Telegraph in
1844.
provide sending of
messages without
many restrictions on
the delivery process.
10. Telephone
• in 1876, the ground breaking invention of the
telephone changed the way people
communicated by allowing wholly interactive,
personal conversation.
11. Radio and
Television
• the Radio was invented at the beginning of 20th
century, followed by the invention of television in 1927.
• both of these devices continue to be a prominent
method of delivering information to the public and as
means of entertainment.
19. • Jaguar worship
was shown in
sculptures and
olmec art, which
depict half-human
and half-jaguar
creature.
20. Decline of the Olmec
• there is no real truth to the collapse of
Olmec civilization, although there are some
speculations:
1. invaders may have caused the
destruction.
2. the Olmec themselves may have destroy
their own monuments upon the death of
their rulers.
28. Decline of the Mayan
Civilization
• About 900 A.D the Mayas abandoned their cities,
living their Great stone Palaces and temples to be
swallowed up by the jungle.
30. •The Aztecs were fierce warriors
•The Aztec empire became very
wealthy from collecting taxes
•By the 1500’s the Aztec Empire
covered most of Mexico and
included approximately 30 million
people.
31. Social Structures of the Aztec
• Aztecs were rule by a single
emperor
• Nobility
• Warriors
• Traders
• Farmers
• Slaves