They have flags because a flag can show one of two things : The lords coat of arms, and so which noble owns the castle the colours of the lords mater for an example a kings coat of arms or a country's flag , showing where its allegiance lies.
Answer:
because in a moment is more important and better than the whole day, like if you get heartbroken, your just gunna carry that the whole day which isn't good for your health. that is why.
Answer:
While you are driving, in an airplane, or in any place that has a posted sign or has said a verbal warning against using your phone
Explanation:
hope this helps!