How did the case of gibbons vs. ogden affect economic practices in the united states?
a. it gave the states the ability to write their own laws to control trade with other states.
b. it allowed the president to create laws relating to trade between states and internationally.
c. it gave private companies the ability to set their own rates when trading with state companies.
d. it allowed the federal government to have some control over trade within and across state borders.

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.