Complex sentence: In 1910 Woodland was the most populous city in the county with a population of 3,187 and for the next forty years Woodland continued growing slowly but steadily in population, businesses and industries.
Split into simpler sentences: In 1910 Woodland was the most populous city in the county, with a population of 3,187. For the next forty years Woodland continued growing, slowly but steadily, in population, businesses and industries.