Explain why magnetic patterns are important evidence for plate tectonics?

Please help me with this question and you will earn points and I will mark you as the best answer so please answer it ASAP!

Situation #1: imagine that you are a free black male living in columbus, oh in 1863. you have seen the recruiting poster and have been thinking a lot about whether or not to enlist in the union army. write a one-page letter (double spaced) to your mother telling her of the decision you have made about enlisting (or not enlisting). be sure to explain the reasons that caused you to make the decision.