South Korea's benchmark KOSPI on Thursday fell to its lowest level this year... after U.S. stocks plunged the previous day. <br />For more, our Ko Roon-hee is on the line for us.<br />Roon-hee, tell us the latest.<br /><br />Mark, Korea's benchmark KOSPI opened lower on Thursday... at around 20-46. This is almost 2-point-5 percent down from yesterday's close. <br />This is the first time that the index was below the 20-50 level since January last year. <br />And on Wednesday, the KOSPI closed below 21-hundred points, its lowest close since March last year.<br />The tech-heavy KOSDAQ also nose-dived by almost 3-percent on Thursday.<br /><br />So, what is the reason for the fall? How did the U.S. markets do on Wednesday?<br /><br />Mark...all major indices on Wall Street fell on Wednesday...with some even wiping out gains made over the past year. <br />The Nasdaq dropped nearly 4-point-5 percent... losing more than 3-hundred-and-29 points. <br />It was the worst performer... and had its biggest single-day slide since August 2011.<br />The Dow Jones Industrial Average shed close to 2-point-5 percent or more than 6-hundred points. <br />The S&P 500 dropped over 3-percent, or nearly 85-points. <br />The Dow Jones Industrial Average and S&P 500 erased all of their gains for 2018.<br />Analysts say uncertainties about the local and global economy have led to this massive sell-off. <br />For instance, investors have been worried about disappointing earnings reports from U.S. companies and the upcoming U.S. midterm congressional elections. <br />And of course, there are continuing worries over the trade war between the U.S. and China.<br />That's all from me at this hour Mark. <br />