What evidence do authors provide to support the theory of how california was named?

In “the things they carried”, why is jimmy unsure when martha calls the pebble “a token of her truest feelings”

Could someone me with this question?

In  the diary of anne frank, the characters feel sadness after reading the hopeful message written on the cake. which theme does this best illustrate? peace is often most appreciated after it has been lost.wartime is capable of bringing out the worst in people.  it is important to have someone in whom to confide.sharing difficult experiences can strengthen friendships