Why was the American civil war?

Why was the American civil war? the story was written____an American writer A.with B.on C.bytell me why Why the American people call the Dollar Bucks? 26.It was in 1969 __________ the American astronaut succeeded in landing on the moon.A.that B.which C.when D.in which why? Why was the river rich? 一道英语竞赛智力题A big American and a little American were in a car.The little American was the big American's son,but the big Amercian was not the little American's father.Who was the big American? who was the president during the american civil war What was the cause of the American Civil War? Who was the president during the American Civil War? Obama was elected to be____President of American again.加不加the? when was the very first American Thanksgiving celebrated The telephone was invented （）1876（）an American 为什么划分州和联邦权力是引起美国南北战争的一个重要原因原题：Why was the division between state and federal power an important cause of the American Civil War? why was the teacher very angry? Why KoKo was slow in the race? Why was the writer is aunt surprised? Why was Pat fast in the race? Why was the writer is aunt surprised?