Which of the following was developed by the Maya civilization? A
the compass
B.
the alphabet
C.
land maps
D.
an accurate calendar
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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.