Which group was considered undesirable during the early phase of Canadian immigration when there was a "racial pecking order"?

Name: Which group was considered undesirable during the early phase of Canadian immigration when there was a "racial pecking order"?
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Question

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During the early phase of Canadian immigration, there was a "racial pecking order" that favored European immigrants over others, and the Japanese were considered undesirable due to this racial discrimination.

Which Group Was Considered Undesirable During the Early Phase of Canadian