Over the last decade, IBM has shifted its center of gravity halfway around the world to India, making it a high-tech example of globalization trends: today, the company employs 130,000 people in India -- about one-third of its total work force, and more than in any other country. While other big American companies like Oracle and Dell also employ a majority of their workers outside the US, IBM is unusual because it employs more people in a single foreign country than it does at home. The company’s employment in India has nearly doubled since 2007, even as its work force in the United States has shrunk through waves of layoffs and buyouts. Although IBM refuses to disclose exact numbers, outsiders estimate that it employs well under 100,000 people at its American offices now, down from 130,000 in 2007. Depending on the job, the salaries paid to Indian workers are one-half to one-fifth those paid to Americans, according to data posted by the research firm Glassdoor.