What period of the mesozoic era did dinosaurs first appear?

What event brought the us into wwii? what conflicts happened after the us entered the war? i know the first part of this question, i need with the second part.

What is the difference between direct learning and indirect learning? a. direct learning is independent learning that people pursue on their own. indirect learning is forced on the learner by others, such as parents or teachers. b. direct learning is forced on learners so that they'll become productive members of society. indirect learning is a voluntary action taken by the learner with the intention of becoming a productive member of society. c. when people learn culture directly, they are imitating and observing others. when people learn culture indirectly, they are being taught by someone else. d. when people learn culture directly, they are being taught by someone else. when people learn culture indirectly, they are learning through observation and imitation.

What tactic did palestinians use against israel in 1987