Japan wanted a Grand Prix as its fan-base became enormous, and everyone wanted Japan to have a Grand Prix because there were potential sponsors and engine-builders there, but nobody wanted to race at Fuji. The answer was Suzuka, which had been designed by John Hugenholtz as a test track for Honda. Because it had been designed as a test track, it had a wide range of corners over its 3.641 miles and it also had a feature unique to Grand Prix circuits, a crossover.
Suzuka was first used for a World Championship race in 1987 and has ever since hosted the Japanese Grand Prix. It has frequently seen the Chmapionship decider, never more dramatically than in 1989, when Prost suckered Senna and then drove into him, or in 1990 when Senna rammed Prost out of the race at very high speed on the first corner. Japan, after all, is the home of kamikaze.