Can you explain the meaning of
laborious comprises phrase in the text below. This paragraph is the 1st paragraph in http://www.all-art.org/art_20th_century/magritte1.html
My issue is actually the
Longman and some other several dictionaries didn't help me
The union of these two ethnic groups, with their so utterly incompatible mentalities, made it necessary to constantly reach laborious comprises, leading to legal and administrative complications of such a nature that they tended more to deepen the quarrel s than to settle them.