What is a difference between multiculturalism and managing diversity?

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$1)$Multiculturalism is in response to the revolving door syndrome, whereas managing diversity is a solution to the leaking pipeline problem.

$2)$Multiculturalism decreases the incidence of ethnic subcultures, whereas managing diversity seeks to give minorities more opportunities.

$3)$Multiculturalism results in a multicultural organization, whereas managing diversity results in biculturalism.

$4)$Multiculturalism promotes pluralism in the organization, whereas managing diversity seeks to create an organization that fosters a more inclusive environment.