Approximately 180 million years
All continents were united in one super continent known as Pangaea. according to Wegener, an observation into the shape and designs of the continents reveals that all the continents were once one large mass. the continent begun to split approximately 180,000 million years ago.
I would say the internet since overtime, the internet is becoming used more than books and physically notes.
Answer:
Ancient Greek art emphasized the importance and accomplishments of human beings. Even though much of Greek art was meant to honor the gods, those very gods were created in the image of humans. ... Therefore, art and architecture were a tremendous source of pride for citizens and could be found in various parts of the city.