From what I know the US seemed to be the only country not using a bolt action rifle as one of their main weapons. Semi-Autos seemed to have been around for a long time and even using weapons like the Winchester Repeating Rifle seems better than these bolt actions that held like 6 bullets. Was it simply the money it cost to manufacture them?
Not to discourage further answers, but u/Georgy_K_Zhukov answered a similar question previously.