Plz help i’ll give you brainilist

Which events are correlated but do not necessarily have a causal relationship?

What do u think caused the size of the roman empire to change

Match the description to the term. 1. ancient people of the british isles normans 2. possible location of oldest known writing emigrate 3. a variety of a language celts 4. the study of word forms indus valley 5. to leave one's country morphology 6. invaded england in a.d. 1066 dialect