Simplify the following text for a Grade 13 native English-speaking person.
Original: The university was first established by a Royal Charter in 1836 , which brought together in federation London University ( now University College London ) and King 's College ( now King 's College London ) , to establish today 's federally-structured University of London .
Simplified: The university was first established by a Royal Charter in 1836 , which brought together in federation London University ( now University College London ) and King 's College ( now King 's College London ) .