Competition: globalisation introduces international brands all over the world, creating a highly competitive market with economies of scale.
Changing consumer tastes and expectations: globalisation introduces new styles, foods, etc. to different parts of the world causing consumers to change views, tastes etc.
Location decisions: many overseas companies choose to offshore to reduce manufacturing costs, this can result in unethical processes and labour.
Economies of scale: during overseas expansion, businesses can spread their fixes costs over an increased output.