There were limited reactions to the attack in the world economy as measured by financial market and exchange rate activity. The value of the British pound to the U.S. dollar went down. The FTSE 100 Index fell by about 200 points during the two hours after the first attack, being the largest decrease since the invasion of Iraq. After the market closed, it had recovered to only 71.3 points (1.36%) down on the previous day's high.