Which of the following historical events directly contributed to the start of the scientific revolution in the 16th century?
a. the rise in popularity of representative governments
b. the independence granted to european universities
c. the unification of christian faiths under the catholic church
d. the establishment of the ottoman empire in the middle east

Historical events that directly contributed to the start of the scientific revolution in the 16th century was: the independence granted to European universities 

Before the independence, most of these European universities were relegated to monasteries so many of them only concerned about performing liturgy and prayers. After the revolution, the intellectuals had the freedom to fully immerse themselves in science.