By the End of the First 150 Years of British

Multiple Choice

By the end of the first 150 years of British rule in North America,a partial religio-political equilibrium between the dominant Protestant ruling class and Roman Catholicism was established.Which of the following was a watershed decade during which that equilibrium began to be challenged?

A) 1850s
B) 1860s
C) 1890s
D) 1900s