Final answer:
The beginning of colonial manufacturing put a strain on the mercantilist system due to the colonies' desire to trade freely with other European nations for better prices, causing resistance to the Acts of Navigation.
Step-by-step explanation:
The beginning of colonial manufacturing put a strain on the mercantilist system and caused resistance to the Acts of Navigation because the colonies wished to trade freely with other European nations who would pay better prices. As stated in the sources, the British imposed mercantilist policies in the colonies in order to benefit from the raw materials produced there and to maintain a favorable balance of trade. However, the colonies desired to trade with other nations, which would offer better prices for their goods. This desire for economic freedom led to resistance and opposition to the Acts of Navigation.