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Spanning more than 300 miles, which of these linked the Atlantic Ocean to middle America and turned the North into a global, economic powerhouse?

Which statements describe einsatzgruppen? check all that apply. they were considered the last step in the "final solution." they were part of the german army. they carried out mass executions. they were known as mobilized killing units. they were used by germany during the invasions of poland and the soviet union.