Why was adding amendments to the constitution made a difficult task

How does a comet change when it comes close to the sun

Briefs filed by groups that care about how a case turns out?

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.