1) Marvel Studios, Walt Disney Studios, Warner Bros. Sound and lots of VFX companies. 2) A conglomerate is a big company that owns lots of smaller companies. Black Widow features lots of production teams that are subsidiaries of Disney/Marvel. 3) The special effects, the celebrity actors, and the soundtrack. 4 a) Trailers Trailers have been the standard way to advertise a movie for a long time. It's pretty much a necessity if you want anyone to see or hear about your movie. 4b) Star Interviews/Power Interviews with the cast attracts fans of said actors to watch/read the interview and then potentially get interested in watching the movie being advertised. Star power works basically the same way as those fans will see their favourite actor in that movie which gives them a motive to watch it. 4c) Audience Promotion Promoting good reviews from audience members has been quite an uncommon thing as big studios typically push out reviews from critics more often. This has been e...