What important policy did Japanese leaders follow between 1638 and 1853?
Japan maintened its policy isolation for more than 200 years .Isolation ad a profound effect on japan.Without outside influence , Japanese culture turned inward.Still, art and literature spread beyond the upper classes.Artists found new ways to interpret traditions.During this time ,internal trade boomed .Cities grew in size and importance,and some merchand families gained wealth and status By the early 1700's Edo(present -day Tokyo) had a million inhabitats, more than either London or Paris.