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Amid strong warnings from business groups, US President Donald Trump signed a memorandum that could impose tariffs on up to billion of Chinese products, fueling fears that the world's two largest economies could be sliding towards a trade war.

Amazon’s Echo devices — the original Echo; the Echo Dot; and the Echo Tap — are powered by the company’s cloud-based artificial intelligence-powered Alexa voice platform, which can answer queries, control smart home devices,?play games with users, set timers, and much more.

Amazon’s new Kindle Fire tablet, released this week, won’t blow users away with a slick industrial design or a high-performance processor. Instead, it’s a utilitarian device, designed to serve as a portal to videos, books and Amazon’s other online services — where Bezos & Co. are hoping to eventually make up the money they’re losing on the 9 hardware.

Among the 2,604 billionaires, fortunes of 55.8 percent were self-made, 11.3 percent inherited their wealth and 30.9 percent from a combination of inherited and self-made.

Among around 130 elderly patients accommodated by the hospital, two were confirmed dead and 47 others were wounded. Of the injured, eight were in critical condition because of smoke inhalation.