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Amazon’s leadership principles could be the key to competing with the tech giant. (Screenshot via YouTube)

Among the collections that include items from the palace are the Royal Engineers Museum's in Chatham, which Tythacott said holds the largest collection of material from the Old Summer Palace.

Amazon’s lawyers disagree, saying there was a legal exchange of consideration. For one thing, the company spends more than on each puzzle piece, they say in one court filing. They also cite as consideration the patent application filing fee (,370, paid by Amazon), the use of Amazon’s legal resources to file the patent, and the salary and benefits received by Varghese during his time as an employee.

Among the export commodities, agricultural products, light industrial products, mechanical and electrical products, and pharmaceuticals and chemical industry goods increased by 16.5 percent, 11.9 percent, 6.7 percent and 2.8 percent, respectively.

Amazon’s Prime program has reached 63 million members in the U.S. — an increase of 43 percent over the past year —?surpassing 50 percent of the company’s U.S. customer base for the first time, according to a new estimate?released this morning.