The navigation act required that a trade to be done in England.
Step-by-step explanation:
The navigation act were a series of law passed by the britian parliament that has imposed the restriction of the colonial trade among the countries. The British economic theory was based on the mercantilism, which aimed to attain to use the american colonies to British state power and finance.
Navigation acts declared that only English ship would be allowed to bring goods into the England. North america could only export its commodity such as tobacco and sugar to England. The acts was followed by the several other imposed additional limitations on colonial trade and increased colonial and customs duties.