Complex sentence: The initial assessment concluded that it would be "un-American" to train foreign troops on U.S. soil, prompting the Norwegian government to refuse a request to recruit Norwegians in the United States for military training in Canada.
Split into simpler sentences: The initial assessment concluded that it would be "un-American" to train foreign troops on U.S. soil. This attitude also led to the Norwegian government refusing the request to recruit Norwegians in the United States for military training in Canada.