And a few of those ignorant tribes practiced a form of religion that created a wonderful society that allowed Tom Weller to publish a snarky book and not be taken down to the beach and beheaded.
It's only when the religion lost power and ability to behead people that the age of enlightenment could begin. Galileo narrowly escaped torture and imprisonment for publishing heretical books suggesting the earth was not the centre of the universe. The church only lifted the ban on his books in the mid 18th century. Real reform only happened (like Quebec's quiet revolution) when the church was kicked to the curb.