The Big Time Fritz Leiber Hugo 1958 Creative, original classic. Leiber's takes the more subtle view that time compensates for changes and moves back toward the same history despite changes in the past.
Real change is a complex, multi-faceted affair.
Time travel and its influences, a perennial SF theme, gets in-depth analysis in The Big Time which gives one of the most intelligent and entertaining perspectives. Made believable in present terms and used as an analogy for cultural and personal evolution. What buckles the back is the added weight of the past's mistakes and the future's fears.