There are several things that the nation tried in order to deal with growing sectional differences: <span>- Northerners refused to accept the fugitive slave act - John brown and his followers protested slavery in Virginia - after Lincoln won the election some states seceded from the union - civil war began when confederate troops fired on fort Sumter
However, this wasn't enough and in the end, it failed.</span>
it was great because it's build on the Bosporus strait which ship have to pass through if they wanted to get from the black sea to Mediterranean sea or the opposite