How did the arrest of rosa parks energize into the civil rights movement?

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.

Plz the 10 places that charles darwin stopped at to report his findings, and include dates?

When top-roping is used, how long should the rope be in order to protect the climber throughout the climb?