I: Map: USA maps richest states ranking II: Map: World map number of billionaires III: Event of history (USA) 1776 Turtle was first American military submarine IV: Event of history (world) 1885–1886 Carl Benz developed the first stationary gasoline engine (1 cylinder 2-stroke engine) powered by petrol V: Cortisol and Cholesterol Cortisol Facts 1. steroid hormone synthesized from organic molecule cholesterol 2. primary stress...
