From the FAQ:
How exactly will claims be laid?
Does this mean you will have claimed territories such as in HOI and EUII?
Will you get them through events, or will you be able to claim provinces yourself, perhaps by influencing those areas alot.
What do you think?

Colonisation
Colonisation in Victoria is all about laying claims to the vast lands not controlled by the industrialized nations. Claims can be contested, and will sometimes lead to war. Explorers can be sent to areas to map out the white spots on the map, and will discover new resources for the empire. Colonists are moving from overpopulated countries in the old world, to the most free and prosperous colonies and new nations,
How exactly will claims be laid?
What do you think?