Final answer:
The Selma-to-Montgomery march was important because it contributed to the passing of the Voting Rights Act, highlighted racial injustice, and showed the determination of African American citizens to exercise their right to vote.
Step-by-step explanation:
The 1965 Selma-to-Montgomery march was an important milestone in the civil rights movement because it contributed to the passage of the Voting Rights Act that year. It highlighted racial injustice in the south and showed the desire of African American citizens to exercise their constitutional right to vote, despite segregationist repression. The march drew national attention and support, leading to increased federal activity in support of voter registration drives.