By roughly 750 the population of northern Europe began to expand. This was due, to part to

The answer is stated below.

Explanation:

Europe's population grew considerably during the mid-eighth century as technological and agricultural advances enabled trade to flourish and the climate change of the Medieval Warm Period enabled crop yields to increase. Also contributing to population growth was the custom of bringing new lands into cultivation by providing rewards to the peasant farmers who settled them.

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1 battles of lexington and concord

2 battle of bunker hill  

3 battles of saratoga

4 battle of new york

5 battle of yorktown