Cause: Ming leaders banned ships with more than two masts. There would be no further construction of ships. Effect:
1 answer:
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Based on the graph attached below, we can observe there is a sharp increase from the 1850s. The reason behind that increase is the Act of Consolidation in 1854, which the borders until that time expanded and resulted with the modern borders of Philadelphia. Indeed, the correct answer is an increase in the number of housing unit.
