Tokyo stocks dropped Tuesday, with the benchmark Nikkei index falling more than 3 percent, led by a plunge in tech issues and growing uncertainty over the U.S. economy, while concerns over Japan's fiscal health spurred a selloff in the yen and government bonds.The 225-issue Nikkei Stock Average extended losses toward the close, ending down 1,620.93 points, or 3.22 percent, from Monday at 48,702.98 and marking the biggest percentage drop since April 9, when the index slid 3.93 percent. The broader Topix index finished 96.43 points, or 2.88 percent, lower at 3,251.10.The yen fell to its lowes…READ FULL ARTICLE