On September 25, 2013, the Kindle Fire HD was upgraded as the third generation Fire, priced at US$139, and the Kindle Fire HDX was introduced. The Kindle Fire HDX had an improved graphics engine, double the memory, and triple the processor speed of the previous model.
Washington, wary of the dangers posed by an individual's becoming entrenched in the presidency, created a two-term tradition that remained intact until Franklin Delano Roosevelt's third consecutive election in 1940.
Roosevelt was the first president elected to a third term, and the only one to exceed eight years in office. While elected to twice as many terms as any other, his death in 1945 came early in his fourth term. The Twentieth Amendment shortened Roosevelt's first term by six weeks and limited his time in office to 12 years and 83 days, much less than the 16 years to which he was actually elected.