Complex sentence: During the first year of its operation, Avondale Mills used 4,000 bales of cotton, and by 1898, Avondale Mills employed 436 laborers and generated $15,000 in profit.
Split into simpler sentences: During the first year of its operation, Avondale Mills used 4,000 bales of cotton. By 1898, Avondale Mills employed 436 laborers and generated $15,000 in profit.