Figure 7.7 Leading Christian denominations in the United States, shown by counties. In the majority counties, the church or denomination indicated claim 50 percent or more of the total church membership. The most striking features of the map are Baptist dominance throughout the South, a Lutheran zone in the upper Midwest, Mormon (Latter-Day Saints) dominance in the interior West, and the zone of mixing in the American heartland. Why do you think that so much of the western United States shows an adherence to Catholicism?