Because they are people just like us and who they love doesn't matter. They didn't even choose it for themselves so why wouldn't we treat them equally.
Citizens of the United States vote for people to represent their ideas and make decisions for them in the government, whereas in a direct democracy citizens would vote on issues directly.
He is responsible for everything that goes on in the country
Southers were farmers, therefore more used to being outside and firing guns, unlike the (mainly business men and store owners) North.
They were fighting on their home so they knew the lands better.
There were eleven states in the Confederacy with excellent military leadership.
They were defensive and believed in their cause.