tyger03032003 tyger03032003
  • 01-10-2020
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What expensive ingredient was needed for the cities to expand upward?

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Mae16w
Mae16w Mae16w
  • 01-10-2020
The expensive ingredient that was needed for the cities to expand upward was steel!

Steel was much needed at that time, and because it was not cheap, it took a while to collect and buy or sell!

Hope this helps!
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