Man in the Americas

I think the maritime theory explains how man got to the Americas. They had to come by boat because the passage way was frozen, solid ice. I also know because the video that I saw said that they came by boat. Many people died in the way to America, first they went to many other places that were not really good because ice ages were happening in other states. Tons of deaths occurred in the green desert because there was kind of a storm. That is why I think they came by boat and other things that happened in there journey to the Americas. Also there was were they found there basic needs and so they settled down there.