Why was valentine's day created/ how?

Brainliesttt asap!me : ) answer in your own words. what was the relationship between medieval theories about scientific reasoning and the kind of reasoning favored during the scientific revolution?

The person who has the job of maintaining order in the house is the sergeant at arms. majority whip. speaker of the house. president of the house.

How does the balance of trade look different in the us today vs hot it looked in the 70's