If you were to break down Churchill's famous quote, you would see this:
Riddle, Mystery, Enigma. These three words are key. They are all connected. What is the connection --- these words describe a secretive and mysterious meaning. The best way to understand a puzzling quote like this is to break it down, and define each and every word; Forming a more understandable explanation.
Answer:
Another effect of the spread of Islam was an increase in trade. Unlike early Christianity, Muslims were not reluctant to engage in trade and profit; Muhammad himself was a merchant. As new areas were drawn into the orbit of Islamic civilization, the new religion provided merchants with a safe context for trade.
Found it: Ocean trenches are found in every ocean basin on the planet
Hitler´s rise to power started after the end of World War I. He joined a political party which´s name he changed as soon as 1920 to "Nationalsozialistiche Deutsche Arbeiterpartei" , meaning National Socialist German Worker´s Party, which we usually know simply as Nazi Party. Anti-Marxist and opposed to the Treaty of Versailles and the Weimar Republic soon started with a srong anti-semitism. The culmination of his rise to power was the "Enabling Act" that permitted him to exercise great power without control.
