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    Thanks for contacting World Warfare Support. 
    The trade option can be unlocked at level 1. The total exchange amount is 6; population, steel, fortune and armaments are available at level 1. Rubber will be unlocked at level 2 and oil will be unlocked at level
    The transport option can be unlocked at level 3. You can transport resources, supplies and armaments to your monument, league city, league mates and to your personal city.