Which series of events led to World War I? * 4 points
Austria took over Bosnia, Serbia declared war on Austria, and Germany declared war on Serbia.
Germany declared war on Serbia, Russia moved to support Serbia, and Great Britain declared war on Russia.
Austria-Hungary declared war on Serbia, Russia moved to support Serbia, and Germany declared war on Russia.
An Austrian-Hungarian nobleman was assassinated, Germany moved to support Austria, and Great Britain declared war on Germany.

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.