Answer:
Mercutio says this as a way to say "Your family feud has caused my death!" The houses referring to each family.
When the first act opens, Bernardo appears to relieve Francisco from duty, but it is so dark they both fearfully call out "who's there?" until they realize it's just guardsmen. We find out that the guardsmen have been spotting the ghost of King Hamlet.
Answer:
The best follow-up question to make in this case would be: what has been done to change the signaling systems to locate the origin of a fire, especially so that the firefighters can get to it without depending on information given by a person.
Explanation: