The ancient Romans used their engineering skills to build aqueducts, bridges, roads, domed structures, the hypocaust heating system and any other building projects they undertook.
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I believe the answer is: positive externality
Positive externality refers to The benefit that enjoyed by a third party when the first and second party are conducting a transaction.
When you receive a vaccines, you prevent yourself from becoming a host that could contaminate other people from getting the virus. In the example above, you and your children are the first and second party. And other children are the third party.
A. It challenged the Kings authority.
The correct answer is A, New England was dominated by trade. This was because sea ports were opened within this area which make it possible for goods to travel back and forth within places. The other regions were places of production of raw produce that were delivered to New England.
True
Constantinople was a historic Roman city
