What communication breakthroughs are connected with each of these dates? 25,000 bce 6,000bce (8,000 years ago) 1,500bce 600ce 1,450ce

These  breakthroughs are connected with each of these dates because they are forerunners of an invention that is a milestone in human communication: the printing press.  

About 25,000 years ago  humans learned to speak. Next, The first picture writings date from 8,000 years ago. Followed by the first evidence of an alphabet which comes from Phoenicia around 1,500 BCE. In 600 CE The Chinese introduced woodblock printing.Finally,Johannes Gutemberg invented the first practical printing press in 1,450CE .

"i care deeply about campaign finance reforms: - apex

the outcome of 1970 oil crisis in united states was that, they began to search ways on how to reduce oil.

in 1970 was a period when there were energy and oil crisis. those who were major centers for industrialization were forced to keep way from supplying of petroleum.

some of the result of this crisis was economic growth became stagnant because prices of oil surged.

due to the increased prices some countries like mexico and norway benefited.