Why did Columbus believe he could get to the Far East by sailing west? What were the problems with this plan?

Because he realized that the world was in fact round and that if you went the opposite way you would eventually end up in the same place.

The major complication was the Americas. A GIANT land mass with no way through it at the time.

well first we can compare on what the slave masters ate and what the slaves ate well the masters ate fancy great food like chicken rice mash potatose and stuff like that and slaves ate well food that your not suppost to eat like the weird parts of turkey and chicken and slaves master chilled beat and eat and slaves work get beat and get little of sleep there you go