Why were suspension bridges important in the Inca empire? The Inca used them to travel through parts of the Amazon Rainforest. The Inca built them within the city of Cuzco as their main transportation. The Inca used them to cross the mountains into the coastal deserts. The Inca built them to cross canyons and rivers in the Andes Mountains

Where did the term “iron curtain” originate? the warsaw pact used the term iron curtain as a code word for communism. in a 1946 speech, british prime minister winston churchill said an iron curtain had fallen across the continent of europe. while visiting western europe in 1946, u. s. president harry truman commented that the mountains there looked like iron curtains. russian general secretary joseph stalin instructed citizens of eastern europe to hang iron curtains over their windows to protect themselves from stray bullets.