Since there was nothing added to the question of two short-term effects of the plagues I had a hard time answering this question so I really don't know for sure if my answer will help you out since not much information was given with the question.
Answer:
Three effects of the Bubonic plague on Europe included widespread chaos, a drastic drop in population, and social instability in the form of peasant revolts.
Step-by-step explanation:
Bubonic plague causes fever, fatigue, shivering, vomiting, headaches, giddiness, intolerance to light, pain in the back and limbs, sleeplessness, apathy, and delirium. It also causes buboes: one or more of the lymph nodes become tender and swollen, usually in the groin or armpits.