Did neanderthals have written language

A1. This is unknown, but it is believed that they could speak.

Answ2. A couple of lines of evidence suggest they had speech.

1) their evolutionary ancestors in the Chimp family have speech.

2) Broca's region in the brain is on the left temple towards the front. This has produced a slight swelling in that region, and which has caused a small difference in the shape of the interior of the skull. Broca's region is certainly associated with speech.