PLS HELP What is part of an effective introduction?

a piece of evidence to support the claim
an interesting quote or fact about the topic
a reason the reader should agree with the writer
an explanation of how the reader can help

1.it provides back ground to the situation

2.it identifies the problem

3.it argues that the problem needs to be solved

4.it summarizes the solution

5.it establishes the writer credibility

Explanation:

It was mostly a flexing contest between the two countries. Russia would make a weapon, them America would make a BIGGER weapon, so russia would make an even BIGGER weapon and so forth.

Explanation: