Final answer:
The French entrance into the war changed British military strategy in North America by consolidating their forces in New York City, avoiding engagements with French forces, and dispersing their armies along the Atlantic coast.
Step-by-step explanation:
The French entrance into the war changed British military strategy in North America by consolidating the majority of their forces in New York City. This was done to protect the city from potential French attacks and maintain control over a crucial stronghold. Additionally, the British actively avoided engagements with French forces to minimize the risk of significant losses. The shift in strategy also resulted in the dispersal of British armies along the Atlantic coast to prevent any possible French landings.
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