What is globalisation?

The increasing links between different countries throughout the world and the greater independence that results from this. For example, Nike has offices and factories throughout the world. 

Countries involved with the production of Lee Cooper Jeans

Milan, Italy - Supply denim to factory in Ras Jebel, Tunisia. 
Frankfurt, Germany - supply synthetic indigo used to dye the denim to factory in Milan Italy. 
Turkey- Supply pumice (used to make the material soft and wearable) from an inactive volcano to Ras Jebel, Turkey.
Benin, West Africa - Supply cotton used to make the denim to factory in Milan, Italy
Japan - Supply Polyester fibre and brass wire to Ras Jebel, Turkey. This brass was originally from Australia and Namibia, and then sent to Japan. 

Countries are becoming more Interdependent. What is meant by this?

This means that they are forming relationships usually in terms of trade with other countries. This has been made possible by the relaxation of laws, allowing foreign investment in countries - this has encouraged the rise of Transnational corporations, the increased provision and speed of international transport and developments in communication with the use of fax, telephone and email. 
For example, the UK is dependent on Tunisia to supply Lee Cooper Jeans to their shops.

How has globalisation made countries more interdependent?

Global trade is the result of uneven distribution of materials and resources - no single country has everything it needs and so countries need to trade with each other. For example, MEDC'S like England import low value goods from developing countries like Tunisia. However, most of the valuable trade happens between developed countries such as England and America. 
For example, Lee Cooper Jeans produce their goods in developing countries (E.g Tunisia, Namibia and Benin). However, they then deliver the Jeans to England. In this way, Globalisation has made countries more interdependent because they have formed trade relationships with each other.