The explosion of the euro market forex

The rapid development of the Eurodollar market, which can be defined as US
dollars deposited in banks outside the US, was a major mechanism for
speeding up Forex trading. Similarly, Euro markets are those where currencies
are deposited outside their country of origin. The Eurodollar market came
into being in the 1950s as a result of the Soviet Union depositing US dollars
earned from oil revenue outside the US, in fear of having these assets frozen
by US regulators. This gave rise to a vast offshore pool of dollars outside the
control of US authorities. The US government reacted by imposing laws to
restrict dollar lending to foreigners. Euro markets were particularly attractive
because they had far fewer regulations and offered higher yields. From the
late 1980s onwards, US companies began to borrow offshore, finding Euro
markets an advantageous place for holding excess liquidity, providing short-
term loans and financing imports and exports.
London was and remains the principal offshore market. In the 1980s, it
became the key center in the Eurodollar market, when British banks began
lending dollars as an alternative to pounds in order to maintain their leading
position in global finance. London's convenient geographical location
(operating during Asian and American markets) is also instrumental in
preserving its dominance in the Euro market.