In 1915 this cool dude named Alfred Wegner had this idea that all of our continents used to be connected and he called it Pangaea. Wegner proposed that 200 million years ago our continents were all connected and that they slowly drifted to the the positions that they are currently in. His hypothesis was backed up with fossil evidence! A fossil named Glossopteris was found in South America and Africa which can only suggest that they were once connected! This wasn't excepted for a while. Later though they found plant evidence in Antarctica( the found ferns) the plant they found can only grow in warm climates which shows that Antarctica was once near the equator, also it supports they theory that our continents are moving.