Everyone knew the world was round in the 15th century. They had a good idea how far it was from Europe to the east coast of Asia going westwards. They knew th

Everyone knew the world was round in the 15th century. They had a good idea how far it was from Europe to the east coast of Asia going westwards. They knew that an ocean going ship wouldn’t have enough provisions to make the journey. Columbus thought the earth was far smaller and he would be able to make it. He was wrong. Fortunatly for him there was a large landmass in the way which meant he could get restock his provisions (water, food etc)