Golly this one sure is hard. It eliminated the need for mail to be carried via roads or rail lines, and things (and people) could be carried directly to the destination's nearest airport instead of all the way down the winding roads to it.
Answer:
To slow down the arms race.
Explanation:
The right answer is the third one: the bubonic plague originated in the Gobi Desert, part of the then Mongol Empire, around 1320. It then propagated to China and subsequently to India, Europe and Russia. The disease spread via trade routes mainly as a result of a poor hygiene. It never reached the American continent or Sub-Saharan Africa.
Islamic terrorism, or Radical Islamic terrorism, is defined as any terrorist act, set of acts or campaign committed by groups or individuals who profess Islamic or Islamist motivations or goals.[1] Islamic terrorists justify their violent tactics through interpreting the Quran and Hadith according to their own goals and intentions.
