Funadvice Logo

Why didn't human beings make much proggres until the last century?

Home More advice General Knowledge

Scientists say that The First Human Ancestor Walking on two is 6 Million Years Old. I don't understand that all remarkable inventions were made in 20 centuries.According to proggress of human we should have lived in other planets. so why didn't people make any proggress before this date? and how can this gap be explained in human history?