The answers to my questions because i don't understand them

The tables shows information about two citied what can you infer about the temperature of these cities

What was a result of the use of farming machines

Which answer best describes the u.s. national road? it ran from atlanta to baltimore and followed the railroad. it ran from new york to chicago and was made from wooden planks. it ran from massachusetts to ohio and ran parallel to the canal system. it ran from maryland to illinois and was made using macadam construction.