Answer:
Human migration is the movement of people from one place in the world to another. Human patterns of movement reflect the conditions of a changing world and impact the cultural landscapes of both the places people leave and the places they settle.
A backsaw is a pretty fine work of art if you ask me. Anyways, it has a stiffening rib on the edge opposite the cutting edge which allows better control for when you are cutting the object! Precise cutting, indeed.
-Mabel <3
Nomadic life-
Disadvantage No specific place to live
Advantage Can follow the sources of food
Permanent settlements-
Disadvantage You have to stay in one place, even when the food leaves
Advantage You can farm and have a home to yourself