The workingmen's party and grange movement
The Celts were not an unified state but rather a group of numerous tribes that often didn't even speak the same language. They were found all around Europe and were mostly Warriors who build their societies around kinship. They were good farmers and mostly were common people. They didn't have a strong unified state because they lived day in day out, women would give birth to children and men would work on the land and occasionally fight against invaders. There was no spirit of a great Celtic nation.
Answer:
Wheat grew well because of the climate.
The middle ages begin with the fall of the western half of Roman Empire in 476
The Ottoman Empire's government was consistently tolerant. The Mughal Empire's government waxed and waned between tolerance under some rulers and intolerance under others. The Safavid Empire was consistently intolerant