Complex sentence: There, the "Coluna do Castello" was born, read, appreciated and feared by politicians, since it was written by someone intimate with the backstage dealings of power and a shrewd interpreter of the political reality.
Split into simpler sentences: There, the "Coluna do Castello" was born. It was read, appreciated and feared by politicians, since it was written by someone intimate with the backstage dealings of power and a shrewd interpreter of the political reality.