I want to know the answer to the following question:
Who did Estonia rebel against in 1343?
All the background I'm provided with is that "From 1228, after of the Livonian Crusade, through the 1560s, Estonia was part of Terra Mariana, established on 2 February 1207 as a principality of the Holy Roman Empire and proclaimed by Pope Innocent III in 1215 as subject to the Holy See.". Is that enough to answer the question?