Modern migration is largely attributed to war and/or political factors. Choose two migrations discussed in the lecture and explain the historic causes behind the groups’ migrations.

"pacesetter of the south," comma inside the quotes

Magma forms by partial melting of upper mantle and crust. partial melt means that only a fraction of the available material forms a melt, and that the remainder stays solid. the partial melt rises because of its lower density and ascends through he crust. this is so conclusive mean the answer would be magma igneous rocks or balistic magma.

Answeraquifer;

Largely uneconomic because they provide little profit or food surplusi think so