The period of Ireland's colonization is between the years of 1536-1691. During the course of more than a century, Ireland gradually became a British Colony. This changed the island's history forever.
English was introduced as a Language that is still used today. The government changed from a tribal culture to a start-run monarchy.
Some of the reasons for the colonization of Ireland included:
Political: Politically, Ireland, under the Fitzgerald dynasty of Kildare did not have great ties with England. Henry VIII believed them to be unreliable allies.
This got worse, when the Irish invited Henry's rival Lambert Simnel as 'King of England' in Dublin.
Socio-Economic Reasons: Many Kings, including Henry, belied that Ireland was a vulnerable island and if conquered by a Great power, can be used to stage attacks on England. This was a fear that was to persist for generations after.
As the countries got closer, money and religion played a huge part. As Ireland was Catholic, many in England believed it was a Divine responsibility to convert the Island and make it Protestant.
Other's saw it as a lucrative market where they can generate tax revenue and sell English goods.