Complex sentence: The baronatos were specially popular between the farmers of the Valley of the Laborer and of the southern region of the Rio of January, not being a matter of much importance between the coffee-growers of the West of Sao Paulo, considered the subsequent generation.
Split into simpler sentences: The baronatos were specially popular between the farmers of the Valley of the Laborer and of the southern region of the Rio of January. They were not a matter of much importance between the coffee-growers of the West of Sao Paulo, considered the subsequent generation.