What was the name of the canal built by the united states in the late 1800s that divided south america and created a waterway passage?

In 1819, what did the united states obtain from spain for $5 million?

2. what was the dred scott decision about? what do we learn from this supreme court case?

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.