How do you read relative humidity on a weather map?

When air at the surface diverges, airflow above must diverge, regardless of hemisphere converge in the northern hemisphere but diverge in the southern diverge in the southern hemisphere but converge in the northern converge, regardless of hemisphere?

Lines of longitude are like stripes from the top of the globe down to the bottom virtually slicing the earth like an orange

What factors britain to become an industrial and commercial power?