Before revision:  instead, we demonstrate a bifurcation in which wealthier Western European countries have managed their mortality rate more successfully.A similar distinction exists in the United States, where Northeastern states have been the most successful in the country  .
After revision:  instead, we demonstrate a bifurcation in which wealthier Western European countries , greater than both Eastern European countries and U.S. states. Some structural similarity is observed between Europe and the United States, where Northeastern states have been the most successful in the country .