Which two colors are typically associated with halloween and why

Who was the better president between richard nixon and john adams in terms of accomplishments ?

This cartoon appeared in 1916. the topic of the cartoon isa)the reason for the start of world war i. b)the success of us submarines in world war i. c)the military alliance between germany and mexico. d)the attitude in the us towards submarine warfare in world 

How would you summarize john hay's first request in the first open door note?