rear end clunking on unsmooth roads

What is your question?

rear end - seems both sides - clunks on bumpy surface - at any speed- no "whupping, growling, or whirring" sounds. strut assemblies replaced all around. unrelated to turning the steering wheel additionally - may be part of same problem or another issue - EXTREME instability, even at very low speed, on wet or icy pavement - fishtails, does 360s, etc thank you for your kind input