they had it the worse because that where the trading/shipping was coming in and out from
The equation that uses both wavelength and frequency is c = fλ. c is the speed of light, which is constant. So that means if f increases, then λ must decrease, and vice-versa. Since f and λ are going in different directions then that means that they are inversely proportional.
They pass laws and stuff thats there main job they work for the people
Which ever you like the most...