Who is responsible for global crisis?

When it comes to "Globalmelt Down", everyone of us knows that its due to "America" and its spread from there."Lehhman BROS " case is well known to us.

But my point is that when this crisis was developing, every one was recognizing its as an success. yes off course i m talking about 1990s. If u believe in nos. then let me tell u that.
in 1950 America has taken "200 billion $" from rest of word.in 1980s that goes to "900 billion$" in 2000 it rises up to "3200". present which is "9000".
it wil twitch ur thought if u think why this all happen.
In 1980s rate of interest was 23% on saving.so who is going to invest in share.
so people are just believing in saving. only 5.2 5 people are concern with share market
but in 1990 rate of intrest on saving reduced to 9 %. so %of people concering to share market rises to 25.
and now its goes to 55 %.Secondly Banking sector stared giving loan at low interest rate
and hence American economy model changed.people who first were saving now believes in investment and expension.
when you have the money u can expend it. but model of American Economy states that its not necessary that u have to have the money in your pocket rather if u have the money in some others pocket still u can expend.
soon other countries of word started to give loan to america to buy their product.last year it selg china has exported "30 kharab $" good to america.
india was not behind that. in 1990 when Manmohan Singh were finance minister. such type of cultre came.but still we adopt saving more than expenditure.
in india 35 %of GDP is saving.So as far as i concern being extravagent was one of the major reason behind global crisis.