There is some debate among historians about where the Slavs originated. Many believe that they were early farmers who cultivated the fertile lands around the Black Sea. Others believe that they came from present day eastern Poland.
By 500 A.D., the Slavs had separated into three main groups. Each of these three groups shared a similar set of beliefs and a similar lifestyle.
Think big thoughts but relish small pleasures.
H. Jackson Brown Jr.
Crude oil was being drilled for in ancient China. In the 6th century it was recorded that hollow bamboo rods were driven into the ground in search of brine to provide salt for cattle. In the process, they also came across natural gas and flammable petroleum, which they used themselves or sold for fuel.