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.
Franklin D. Roosevelt, pictured in August 1944, was elected to both a third and fourth term, the only president to serve more than eight years. Franklin D. Roosevelt spent the months leading up to the 1940 Democratic National Convention refusing to state whether he would seek a third term.