Internationalism is a doctrine that incorporates "active involvement in world affairs" as one of its main goals.
Mr.Frank gave Anne the diary after they moved into the Secret Annex to write down her thoughts and whatever was on her mind.
Peter and Anne have a delicate relationship at the beginning,( and they often argued!), but later, they become more affectionate towards each other.
Maturity is when you start to see things for what it is in life. It is when you gain wisdom and someone who is mature is someone who doesn’t “cry over spilt milk.” It occurs when someone endures so much in life and they now are mature enough for physiological gain.