Which minister does Brandenburg not have?

EDITORIAL LEARNING AID

Why is this answer correct?

Under Article 32(1) of the Basic Law, the conduct of relations with foreign states is a matter for the federal government, so there is no Brandenburg foreign minister. Justice, finance and internal affairs, by contrast, are the state's own responsibilities, with ministries in Potsdam.

No state has a foreign minister, only the federal government.

This translation and explanation are editorial learning aids. The official German wording and answer key govern the examination.