Enabling: the Behavior of an Enabler. Enable has a number of senses, most of which are some variant on allowing someone (or something, such as enabling cookies on a computer) to do something.
The assertion of royal control over the Kingdom of New Spain and the initial Spanish conquerors took over a decade, with importance of the region meriting the creation of the Viceroyalty of New Spain. Established by Charles V in 1535, the first viceroy was Don Antonio de Mendoza.
Still, in size the Mongol Empire was much bigger than the Roman Empire. The Spanish Empire changed a lot, actually. Together with Portugal they ruled a huge part of the World until the British and others took over. Spain still exists but is now just the European peninsula and some small areas on the coast of Morocco.