Well, it wasn't really religion which was the primary goal of the western countries but dominance on land. Since it has been a bloodbath in conquering lands, they ought to use religion to peacefully influence these tribes by bring priests.
The answer should be <span>D. Itinerant preachers spread their religions.</span>
My answer: so from what i have concluded in clear words id like to say
1. it is absoulety not <span>C. They practiced quietly at home. = WRONG 2. totally not </span><span>B. Preachers settled towns as people moved west.= WRONG 3. not </span><span>A. Churches were the first things built in towns. as well = WRONG
FINALLY................. </span><span>D. Itinerant preachers spread their religions. = CORRECT :)</span>