If the main material of MC_VerticalLand will be maken by aluminum similar to airplane's material could be easily transported around the world.
So American would become the birthplace of {the biggest inventors + the biggest manufacturers}.
Out of American can just need {Certifications + Licenses + setup MC_VerticalLands}.

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{Top floors + both sides of the bridge + first floors} are for outstanding contributors. Others can be marketing any way.