Misc: Band with 3 confusing videos, the last one being "Estranged"?

Questions

Which greek city-state fought against Athens in the Peloponnesian war?

In what sort of boats did the viking travel?

Which american composer wrote rhapsody in blue?

Which civil rights leader was killed by James earl ray in 1968?

Which oil bearing substance did Noah use to coat the Ark and make it waterproof?