The sharp drop in Japan’s Nikkei stock market index last Thursday and subsequent global share sell-off have highlighted mounting instability in world financial markets.
Today any modern multi-million urban conglomerate is unimaginable
without the metro (underground, subway). Underground is the most convenient and
fastest means of public transport. Over the last century there were created well
developed underground metro systems in most megapolises of the world. And Japanese
capital Tokyo
was no exception.