The Catholic Church became corrupted, due to its overgrown power. Because of the Pope's overspendings, the Pope started the Sales of Indulgences. The Sales of Indulgences was a scheme to earn more money. It made people spend money so that they/family members go into heaven. This upsetted a reformer, Martin Luther. That started the Reformation. So in summery, the Catholic Church gained to much power ( more than the nobility) and it wanted more money. BTW, this only a little bit of it.
“Cultural diffusion is the spread of cultural beliefs and social activities from one group of people to another. ... The mixing of world cultures through different ethnicities, religions, and nationalities has only increased with advanced communication, transportation, and technology.”
Hope this helps!
~BBGLUVER
Friar Laurence is concerned because up until this point Romeo has been so hopelessly in love with Rosalind.