Final answer:
The British took two routes to reach Lexington and Concord on April 18, 1775: a land route and a water route.
Step-by-step explanation:
The British took two routes to reach Lexington and Concord on April 18, 1775. The main route was the land route, which involved British soldiers starting from Boston and marching to Lexington and then to Concord. The other route was the water route, where a group of British soldiers traveled by boats to the Charlestown Peninsula and then crossed to Cambridge.
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