Archaeologists and ethnographers study artefacts, which are all the things made or used by people, to work out how people lived in the past.
(Archaeologists and ethnographers study artefacts; are; all the things made or used by people) (all the things; made; ) (all the things; used; by people)
Archaeologists and ethnographers study artefacts all the things all the things
are made used
all the things made or used by people
by people