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.
Only Franklin D. Roosevelt served more than 2 terms. He served 3 and was elected to a fourth term, but died in the first year. Washington set a precedent when he chose not to run for re-election in 1796 after serving only 2 terms. Future presidents followed his precedent until 1940 when Roosevelt ran for a third term.