What were the major "highways" of the day in the 1750s?

What was the first most significant result of the peninsular war

Was the first african american to be appointed to the u.s. supreme court.

Did the spanish settlers and missions have a positive effect on world history? why, what did they do that was positive? why was the treaty of paris (1763) good for the world/world history? did the plymouth colony have a positive effect on world history? why, what did they do that was positive?