Ancient societies like the mayans

only united when they were about to be conquered by enemies
never developed the ability to create accurate calendars
had a social structure similar to egypt’s pyramid structure
were concerned with religious duties more than daily activities

How did the construction of the erie canal improve transportation in the united states in the 1820s? a. the canal connected the great lakes to the mississippi river. b. the canal connected the great lakes to the ohio river. c. the canal connected the atlantic and pacific oceans. d. the canal connected the great lakes to the atlantic ocean.