Which major voyage did Columbus require funding to embark upon? Who funded #1? Which kingdoms did #2 rule over? Is the Portuguese Empire included in #3?
Portuguese Empire
 King Ferdinand and Queen Isabella funded Columbus' voyage to the New World. King Ferdinand of Argon and Queen Isabella of Castille were the joint rulers of kingdoms of the Iberian Peninsula, which included modern-day Spain but excludes Portugal.  King John II of Portugal rejected Columbus' request for funding. 
Global empire centered in Portugal
Did Columbus obtain his funding from the rulers of the Portugese Empire?