Some Union commanders gave them shelter and protection; others returned them to masters who could prove their loyalty to the United States.

一些联邦军军官为他们提供了庇护，另一些则在奴隶主宣布效忠联邦后将之归还。

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In the outgoing centre-right government, the Bavarian-based Christian Social Union argued that dual citizenship fostered divided loyalty.

ECONOMIST: Germany