Complex sentence: This causes an age of suspicion and paranoia, making it easy for the kingdom to conquer surrounding areas and expand its influence while being plagued by an influx of Horrors from the scarcity of Makai practitioners and Mendoza's use of his Zirkel's Ring.
Split into simpler sentences: This causes an age of suspicion and paranoia, making it easy for the kingdom to conquer surrounding areas and expand its influence. The kingdom also becomes infested with an inordinate number of Horrors, mainly because of the scarcity of Makai practitioners and Mendoza's use of the dangerous artifact known as Zirkel's Ring.