Anthropology and changes in society

What does it mean to say that the world is simultaneously becoming increasingly divided and increasingly homogeneous?

What role has colonialism played in cultural change? What role do multi-national corporation play? How do anthropologists contribute to the understanding of these processes?

In what ways do urbanization and globalization affect traditional societies? Can you give any examples from the real world of a smaller scale society that has been affected by colonialism or globalization? How do anthropologists contribute to the understanding of these processes?