Material culture refers to the physical objects, resources, and spaces that people use to define their lives. These include homes, neighborhoods, cities, schools, churches, synagogues, temples, mosques, offices, factories and plants, tools, means of production, goods and products, stores, and so forth. All of these physical aspects of a being help to define its members' behaviors and perceptions. Non‐material culture refers to the nonphysical ideas that people have about their culture and within their lives, including beliefs, values, rules, norms, morals, language, organizations, and institutions. For instance, the non‐material cultural concept of religion/faiths consists of a set of ideas and beliefs about God, worship, morals, and ethics. These beliefs, then, determine how the culture responds to its religious topics, issues, and events.
MR SINN, I AM VERY ANGRY AT YOU. YOu SAI D THAT CHRISTIANITY FOLLOWS RELOCATION DUIFFUSION WHEN IT CLEARLY IS EXPANSION DIFFYUSION IN YOUR YLTIMATE REVIEW PACKET, PELEASE CHGANGE THIS RIGHT NOWWWWWWWWWWW. GRRRRRRR :(< WOMPPPPP WOMPPpp
Take my next words with a grain of salt, this is just what I was taught and can also be found through a little bit of digging on google. Christianity spread through a lot of types of diffusion, but the two most known would be relocation diffusion and hierarchical diffusion, which is a type of expansion diffusion, so you are both right.
I think this is more like an overview of the unit, if you were to not understand or needed further clarification, the unit 3 videos would help even more.