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Amazon’s agreement to?acquire?TenMarks?in late 2013 was part of a surge in activity by the company?in education and online learning, as documented at the time?by longtime?education technology analyst?Frank Catalano. The broader Amazon Education initiatives also include the Whispercast digital distribution technology and Kindle e-readers in the classroom.

Amazon’s marketplace for third-party sellers has become a huge part of its business, making up nearly 60 percent of gross merchandise sales last year. However, a new investigation by The Wall Street Journal shows that thousands of unsafe products have made their way onto the marketplace, the latest example of a tech giant struggling to police the platform it created.

Amazon’s growth has propelled the retail giant to become the country’s second-largest employer behind Walmart. But in terms of total employment, Amazon remains well behind Walmart, its chief competitor on a number of fronts. Walmart employs 2.3 million people worldwide.

Among the assets that TenMarks brought to Amazon was an existing customer?base of more than 25,000 schools in 7,000 districts. TenMarks has traditionally used?a freemium model,?allowing teachers to sign up for free, but requiring them to?pay for certain features.

Among them, 207 are from Guangdong Province, 109 from Guangxi Zhuang Autonomous Region, 110 from Fujian Province and there is also a team leader.