PARIS — European governments overcame their differences to put $2.3 trillion on the line Monday in guarantees and other emergency measures to save the banking system in their most unified response yet to the global financial crisis.

The pledges by six countries that use the euro and Britain helped soothe stock markets, along with a promise by top central banks to provide unlimited short term dollar credits.

The amount — pledged by Germany, Britain, France, the Netherlands, Spain, Portugal and Austria — dwarfs the $700 billion rescue package put together by U.S. President Bush's administration, although not all the European money will necessarily be spent.

It represented Europe's most unified response yet to the financial crisis, after weeks where European governments often acted at cross purposes and sniped at each other — a piecemeal approach that failed to stop steep and frightening slides on financial markets.

"The time of each one for itself is fortunately over," French President Nicolas Sarkozy said, following a Cabinet meeting that approved France's spending in the framework of the scheme.

"United Europe has pledged more than the United States," added the French leader, who has taken a lead in corralling European governments to act together.

The money pledged by European governments will not go into a collective pot. Instead, governments were deciding individually how much to commit to supporting their own banks under broad guidelines agreed at a summit on Sunday. The sums are considered a maximum, and might not all be spent if the financial crisis eases.

About 250 billion euros ($341 billion) of the European pledges was earmarked to be spent on recapitalizing banks by buying stakes.

The money pledges put a price tag on the package agreed to Sunday by the 15 countries that use the euro currency. They agreed to individually guarantee bank refinancing until the end of next year, rescue important failing banks through emergency cash injections and take other swift measures to encourage banks to lend to each other again.

Stocks markets rebounded Monday after the European decision and other weekend efforts to find solutions to the financial crisis, which has crushed major banks in both the U.S. and Europe and battered stock exchanges worldwide.

Germany's DAX rose 518.14 points, or 11.4 percent, to close at 5,062.45, while France's CAC-40 was up 355.01 points, or 11.2 percent, at 3,531.50. Britain's FTSE 100 was 324.84 points, or 8.3 percent, higher at 4,256.90, despite some hefty falls in the banks that have accepted government help.