Why stone age people loved alonh the river?

Stone Age People What does 'Stone Age People ' mean?Where di 1.Why did people make boles in the bank of the river? why do people call 黑龙江suifen river "Special 还有Stone Age Why is the river rich? ( )people have visited the ( )stone bridge Why did the people the people of working age怎么翻译 why is the Yellow River yellow? Why the river is very rich? why the river is so rich 英语翻译In Britain,the early settlers who followed the Stone Age