White workers in the west blamed the for economic hardships.

The white workers in the west had blamed the Chinese immigrants for economic hardships because of ethnic competition from petty-commodity to capitalist relations under conditions of unequal labor costs which result to market crowding. In addition, the white workers fear that the immigrants can harm their wages and job prospects.

this means that germany had to pay the allied countries. reparations are/is essentially payment for something that they have done wrong, so after ww1, germany was forced to pay reparations so they could replenish the allied countries resources' that they had lost during the war.