Why do scientist think the Horse was in Central America, B.C.?

Fossil evidence indicates that modern horses (various species of the genus Equus) lived in the Americas from 3 million to about 10,000 years ago. The cause of their extinction is unknown, possibly related to climate change or human predation. Horses were reintroduced to the New World beginning with Columbus's second voyage in 1493.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.