How was the world changed? To begin with, when pangea started to break apart sediment and other rock was built up to the surface, after the Eurasian plate collided with the Indian plate. When the two plates collided with each other the Indian plate slid underneath the Eurasian plate. This built up lots of land mass and made the land rise up. Because of this happening, the Himalayas were formed. Also, interestingly scientists believe and expect this same event will happen in Africa. The African plate is going to collide with the Eurasian plate to create another enormous mountain range.; the world's last supercontinent started to break up. When this happened the Indian plate collided with the Eurasian plate. During a long period of time the land mass started to build up, and has created the fascinating mountains we know today. The earth, its people, and the world have been affected in many ways since the formation of the Himalayas.