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.
Washington's incumbency established many precedents, still in use today, such as the cabinet system, the inaugural address, and the title Mr. President. His retirement from office after two terms established a tradition that lasted until 1940, when Franklin Delano Roosevelt won an unprecedented third term.