Historic, yes. Unprecedented, no. The Treasury’s intervention to bolster the yen is the first since 1998, when it bought the currency in order to strengthen Japan’s economy after the yen had dropped to eight-year lows. The US intervened in Japan’s currency in 2011 to weaken it as part of a co-ordinated international effort to prevent a dangerous currency appreciation after the Tohoku earthquake and tsunami. (From TFA…
The start of the dot com boom I would mark at August 1995 when Netscape’s IPO was the most successful IPO to that date. But really I mark it with the IETF RFC 1290 “There’s Gold In Them Thar Networks” in 1991. But yes, the 21st century was defined in 1990’s. Everything since is derivative. I feel sad for those born after everything worth doing had been done already.
Though yes, I'd agree that NSCP launched the mania.