Please help with this.

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.

Because the texas constitution does not have a "necessary and proper" clause, a government powers are almost unlimited b. much of what is included in the constitution is improper c. the governor has to make the laws d government is limited to what is in the constitution

Which event is considered to be start of the "hellenistic era"? a) the founding of the roman empire b) the death of alexander the great c) the end of the peloponnesian wars d) the founding of the roman republic