Answer:
Cultural diffusion is when one part of a culture moves to another. I think cultural diffusion works when cultures become trade partners. A trait can travel over great distances because of travel. I think one cultural trait that would be passed is a language.
or
Cultural diffusion is the spread of cultural beliefs and social activities from one group of people to another. A trait could travel great distances due to migration to another place. Traits that can be passed down are food, religion, and clothing.
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The original group of people living in Australia was known as the Aborigines. The British Empire claimed Australia around the same time the United States claimed independence. The discovery of gold in the early 1950s started a gold rush that movement of people to Australia. In 1901 the Commonwealth of Australia was formed and made it an independent Country.
I do believe that, after research, it is C, Coltan.
Correct me if I am wrong, but do have a good day!
C. to instill patriotism and support for the war