| 21. | Since 1995 it is located in the former headquarters of Zeche Zollverein in the city of Essen.
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| 22. | Recognising this, the grand duke integrated it into the German " Zollverein " in 1842.
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| 23. | The new " Zollverein " was stronger, in that no individual state had a veto.
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| 24. | After the war, Luxembourg left the Zollverein, and ARBED had to seek out new export markets.
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| 25. | Customs checks were carried out there until 1888 when Hamburg joined the Zollverein ( German customs union ).
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| 26. | However, not all states within the Empire were part of the " Zollverein " until 1888.
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| 27. | In particular the long established trading partnership between Argentina and England would be seriously affected by the American zollverein.
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| 28. | The parties to the treaty were the states that at the time were members of the Zollverein : W�rttemberg.
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| 29. | The convention was agreed to at the General Mint Convention of the States of the Zollverein, held at Dresden.
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| 30. | Wetzel works as an occasional guide at what was once the area's largest mine, the Zollverein in Essen.
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