The use of iron for tools and weapons developed later than the use of copper because iron

True exact date for the withdrawal of american combat troops in iraq was set for august 31st 1. 2011 2. 2010 3. 2012

Although the three-fifths compromise northern and southern states reach an agreement that allowed for ratification of the constitution, in the long run it had a negative effect on the nation because a) it gave too much power to the executive branch of the government. b) it forced the founding fathers to add the bill of rights to the constitution. c) it was only a temporary solution to the argument between "free" and "slave" states. d) it gave too much power to state governments and not enough to the federal government.

How did the growth of the middle class affect social reform during the industrial revolution?