Just before he died of lung cancer he was starting to build disney world there but died before he could finish it so his brother finished disney world for him.
Disneyland in California wasn't large enough for what Walt Disney wanted, so they came to Florida where they could get a lot of land and the possibilities would be endless for what they could do....
Walt Disney made Disneyland in California, then he had an idea of making a larger version. He wanted something on the East Coast to capture that market, as only 2% of Disneyland's customers came from...