During the 18th century, most people started moving to urban areas due to increase trade in society

That’s right but also 18th century was the beginning of the industrial revolution so you see people moving to the cities to work in factories

the effect of the ming leaders banning ships with more than two masts was that there was no further construction of ships masts, because there was a surplus. ming emperors disallowed foreign exploration

whose power in the senate is equal to the power of the speaker of the house?