WASHINGTON (AP) – On Day One, the $700 billion plan didn’t help. Just the opposite.

The government’s huge rescue package, aimed at rebuilding economic confidence in the U.S. and around the world, appeared to sound a global alarm instead on Monday, the first trading day after Congress approved the measure last Friday with fanfare and President Bush signed it.

From Asia to Europe to Wall Street, there was a fearful international sell-off as administration officials began work on a plan that investors feared would be too little and too late to stave off a worldwide recession.

While markets around the world tumbled amid fast-spreading anxiety, officials in Washington worked quickly to put the new financial plan into effect and to shovel more money into the banking system.

The Treasury Department named a former Goldman Sachs executive, Neel Kashkari, now Treasury’s assistant secretary for international affairs, to oversee the new program and said it would increase its bond sales to help pay for the huge package.

Trying to do its part, the Federal Reserve increased a short-term loan program to as much as $900 billion and announced it would begin paying interest on reserves that banks keep with it.

Bush sought to reassure panicking markets. “It’s going to take awhile to restore confidence in the financial system. But one thing people can be certain of is that the bill I signed is a big step toward solving this problem,” he said in San Antonio, Texas.

Nobody seemed reassured. Chaos in the financial system seemed to be growing by the minute.

The Dow industrials plunged below the 10,000 level for the first time in four years, and at one point were down as much as 800 points before recovering to close with a loss of 370. All sectors – not just financial companies – were being sold off.

“People are panicked that their bank is going to go out of business. People have just lost a lot of trust in the financial system and in these large institutions,” said Anil Kashyap, professor of economics and finance at the University of Chicago’s Graduate School of Business. He suggested the crisis has morphed from a near shutdown in lending to a new, more dangerous phase in which financial and other companies face greater chances of insolvency.

The fear was reinforced by new problems among European banks and fresh worries in Asia of a spreading global recession that would harm the continent’s prized ability to export.

It all started with a U.S. housing boom, helped along by low interest rates and government encouragement for more home ownership. Too many home mortgages were written for too many people who really couldn’t afford them. Banks and other financial companies that made these home loans then resold them. Many were packaged into Wall Street securities and sold to investors. There was lax federal regulation over the process.

It worked as long as home prices were going up. But when they started to fall several years ago, the process began to collapse. Many people suddenly owed more on their homes than they were worth. Rising interest rates made it harder to meet monthly mortgage payments that were resetting to higher levels. Foreclosures increased. The infection spread as markets dried up for mortgages and mortgage-backed securities.

Now, many banks and financial institutions don’t have enough money to cover their obligations as a result of the plunge in the value of these securities on their balance sheets. Many are hoarding what cash they have. That’s what the bailout is supposed to help fix, with the government buying these hard-to-value assets and reselling them later in hopes of allowing banks to start lending again.

But trust among banks is in short supply on a battlefield littered with a growing number of dead, wounded and transformed financial institutions.

Gone are Wall Street investment banks Bear Stearns and Lehman Brothers. Merrill Lynch gave itself up in a fire sale to Bank of America. Washington Mutual ceased to exist,and Wachovia, once the nation’s fourth largest bank, is being acquired – either by Wells Fargo or Citigroup. American International Group, one of the world’s largest insurers, is struggling after a big loan from the government kept it from collapsing. Mortgage giants Fannie Mae and Freddie Mac have been essentially taken over by the government.

Meanwhile, the credit squeeze has spread from Wall Street to Main street, affecting everything from new home and car loans to student loans, credit card availability and even short-term loans to help businesses expand or meet payrolls. A darkening recessionary cloud is spreading over a nation where two-thirds of the economy is derived from consumer spending and where there have been nine consecutive months of job losses.

Some top economists seemed at a loss for ways to stop the downward spiral.

“I think what’s needed is a global rate cut. But even that I don’t think would solve the basic problem, which is that everybody’s just scared of loaning money to anybody else,” said David Wyss, chief economist for Standard and Poors in New York.

Pressure was growing on the Fed and other major central banks to band together and announce a global interest-rate cut.

Many believe the Fed will ratchet down a key lending rate to banks – now at 2 percent. In turn, the prime lending rate – now at 5 percent – for certain credit cards, home equity lines of credit and many other consumer and business loans – would drop by a corresponding amount.

Some believe rates could be slashed soon by as much as a full percentage point to 1 percent in hopes of encouraging people and businesses to spend more, thereby restoring confidence to the system.

Others, however, are skeptical.

Even if borrowing costs were to decline, that doesn’t mean banks would be more inclined to lend more freely.

“You can bring the horse to water, but you can’t make him drink,” said Richard Yamarone, economist at Argus Research. “The panic has so intensified that no matter what the Fed or Treasury throws at it, it may be ineffective. It can be hard to slay the dragon of fear when it takes over the market.”

Rob Shapiro, who was an economic adviser to President Clinton, said the crisis in Europe will turn out to be at least as severe as it is in the United States. “Between Europe and the United States, we’ll take everybody else with us. And this is reflected in the markets,” he said.

Shapiro, who heads the global initiative program at NDN, a Washington think tank, said one step that might help restore confidence would be for the government to set up a program to make direct loans to people facing foreclosures. Another might be for the government to turn all the problem mortgages held by Fannie Mae and Freddie Mac into 30-year fixed rate ones.