The Apostles didn’t spread Christianity. The Roman Empire tortured, imprisoned and killed people, destroying lives indiscriminately, enslaving people, and Forcing the religion onto people who might otherwise have come to it, of their own volition, had it been practiced in the ways Christ spoke of, rather than with violence and destruction that still haunts and drives people away from the Church and Faith in Christ.
One of the many failings people run into, trying to “convert” or in attempting to “bring Christ” to non-christians, especially, is the inability to see the truth as facts, and deny them, in favor of “defending the faith” at an emotional level, rather than enable oneself to argue from a perspective of reason, in acknowledgement of past failures.
One can’t argue with Atheism, when one struggles with understanding their perspective of history available for All to read. If we don’t learn from History, we’re doomed to repeat it, and we All suffer for it.