Please help :)

I didn’t mean to click the last one; and it won’t let me undo it.

Gettysburg address question. what is the purpose of this address?

How important is it to have a powerful army and navy? give two reasons for your answer

Which statement is a good description of a model? a) models are a description of nature based only on one or two variables. b) models are testable ideas but they are not very to most people. c) models are a description of nature that predicts more accurately than real events. d) models are an approximiation of a real system that omits all but most essential variables in a system.