What was the first year toyota built ifs landcruisers?

1951, but it was only a military vehicle.

The Toyota Land Cruiser (Japanese: トヨタ ランドクルーザー, Toyota Rando-kurūzā?) is a series of four-wheel drive vehicles produced by the Japanese car maker Toyota Motor Corporation. Development of the first generation Land Cruiser began in 1951 as Toyota's version of a Jeep-like vehicle and production started in 1954. The Land Cruiser has been produced in convertible, hardtop, station wagon, and utility truck versions. The Land Cruiser's reliability and longevity has led to huge popularity, especially in Australia where it is the best-selling full-size, body-on-frame, four-wheel drive vehicle.[1] Toyota also extensively tests the Land Cruiser in the Australian outback — considered to be one of the toughest operating environments in both temperature and terrain.[2][3][4]