Hargreaves’ spinning jenny was invented in 1765 and Arkwright’s water frame in 1769. Crompton introduced his “mule” in 1774. The Wealth of Nations, of course, was published in 1776, but it is hard to argue that the introduction of the power loom by Cartwright, in 1785, was the ...
Two (or maybe more) possible explanations for the geographic distribution of Clovis culture exist. One is that a new wave of immigrants brought the complex with them from Asia after the ice sheets started retreating. That after all was the original explanation for Clovis, ie the “ice-free co...
Britain is an island country surrounded by the sea. It lies in the North Atlantic Ocean off the north coast of Europe. It is separated from the rest of Europe by the English Channel in the south and the North Sea in the east. 英国是一个岛国。它位于大西洋北部,与欧洲大陆的北海岸隔海相望。