A small meeting of brokers under a buttonwood tree on Wall Street marked the founding idea of the New York Stock Exchange, and the passing of the mantle for the world’s financial center from London to New York. But the transition went over with fits and starts, particularly as the world erupted in war in the early decades of the 20th century. A sell-off by foreign countries in preparation of war led NYSE to briefly suspend trading – and most countries follow suit – but it resumed with bond price restrictions, to keep enemies from profiting off trade.

On this day, November 28, 1914 nine months after the trading suspension, the New York Stock Exchange lifted the bond restrictions, allowing trading to resume once more.

As the engine powering the world’s economy, the NY Stock Exchange interrupts trading only for events of extraordinary importance. Even a terrorist bomb outside the J.P. Morgan building in 1920, despite killing several dozen workers, was not enough to pause trading. The attacks on September 11, 2001 closed Wall Street for three days, but outside of terrorism the only stops in trading have been during financial panics.