Japan has a very high level of ethnic homogeneity. What effects has this had on its economy? (select all that apply)
a) intolerance of ethnic minorities makes it difficult to bring immigrant workers into the labor force
b) the lack of ethnic diversity has led to a very large wealth gap
c) ethnic harmony has made it very easy for Japan to institute difficult economic reforms, such as allowing inefficient businesses to collapse
d) ethnic unity has produced "unity of purpose" among Japanese people and allowed them to work together to rebuild their economy