What do you think was the most important improvement as policing evolved from the early days into more modern times?

Please respond to the question provided by the Professor below. His question is responding to order id# 097116322
Your response is to be supported with at least one scholarly source (other than the assigned course text) as well as the course text. The response should demonstrate the application of theory, law, policy, practice, and/or scholarly literature
Question:
What do you think was the most
important improvement as policing evolved from the early days into more modern times?
Course Materials:
1-Title: Policing America (9th ed.)Author: Peak, K., & Sousa, W. Publisher: Pearson
Year Published: 2018ISBN: 97801345256959
2-Title: Police & Society (7th ed.)Author: Novak, K., Smith, B., Cordner, G., & Roberg, R. Publisher: Oxford University Press
Year Published: 2017ISBN: 9780190639211