Globalization.

Definition by Wikipedia.org:
Globalization (or globalisation) is the process of international integration arising from the interchange of world views, products, ideas, and other aspects of culture.

                                                                                    History: 

The many meanings of the word "globalization" have accumulated very rapidly, and recently, and the verb, "globalize" is first attested by the Merriam Webster Dictionary in 1944. In considering the history of globalization, some authors focus on events since 1492, but most scholars and theorists concentrate on the much more recent past.
But long before 1492, people began to link together disparate locations on the globe into extensive systems of communication, migration, and interconnections. This formation of systems of interaction between the global and the local has been a central driving force in world history

My own words:
Globalization is a worldwide phenomenon that consist in the exchange of traditions, culture, ideas...written like this, it doesn't sound very bad, but it is in some aspects. The whole idea of exchangind cultures is a good one because we can learn so much from other countries, but the thing is that globalization doesn't work like that, globalization is a capitalist movement and that puts things into a new level.
Because globalizaton is not learning in it's entirety, is also trade, money and politics, which means we exchange more than our cultures, traditions and ideas, we exchange money, and when money is involved, things usually go wrong.

We think that globalization is that a person in Pekin is able to watch a show made in the U.K, but no, that's globalization, but it is not all of it, because sometimes the givin and taking thing doesn't work in both sides of the planet, for example: in Africa, lots of children make everyday tons of Nike shoes that then are sold in our developed countries for thousands of euros/dolars/pounds...but they get nothing, so where does all that money go? To the enterprises. See? That's the other side of globalization. And how are the enterprises related to politics? Very easy, as I said before, we live in a capitalist world, politicians have agreements with the enterprises so the politicians can have their support during their term and then after, they can have a job there and, in exchange, they give the enterprises their support and money to do what they want. And that works like that in the whole world.
So basicly, we're ruled by big coorporations who want the world to think the same and act the same in order to manipulate us easily, because when there are no differences between the thoughts of one part of the world and the thoughts of the other, it's easier to make them think they need what you have to offer them.

Sources: 
http://www.sas.upenn.edu/~dludden/global1.htm
http://en.wikipedia.org/wiki/Globalization
My own thoughts.