By being in the north and wanting the south to rid of slaves, and to make them join the north. but the south only had huge amounts of farm land, and no way to sow, till, or harvest all that land with out a few hundred slave workers. the north seen that as unnescessary to do. the north also laid out laws that the south didnt agree with leading to the southern states declaring independancy against the north witch lead to war.
Iron was a great tool that had many uses, they secured houses and could be made into swords. The working of iron melted it so you could form sturdy and strong tools.
<span>Slate was more common in wet microclimates.</span>
