The answer would be "to help you decipher symbols and scale."
Without the key, a lot of the symbols would be quite confusing and you wouldn't know if it was 5 miles or 500 miles. Everything else is implied throughout the map, but the key's purpose is definitely to help you decipher symbols and scale.
Because they believe Sirius Black is there.
It wasn't actually a falcon
Cheever informs Danforth that the cows are wandering the streets because so many of their masters (farmers) are in jail. Parris has to argue with the farmers because they are fighting over the wandering cows. The town is in chaos. Consequently, Parris fears that the people will rebel against the court.
Answer:
bro really
Explanation:
mans really just asked us to write him a whole essay