Complex sentence: During the Sengoku jidai Iga province due to a number of factors not under the power of a daimyo, and achieved full independence and was controlled by a coalition of local goshi called Iga Sokoku Ikki (伊賀惣国一揆, the "Iga republic").
Split into simpler sentences: During the Sengoku jidai Iga province was, due to a number of factors, not under the power of a daimyo (feudal lord). Iga had achieved full independence and was controlled by a coalition of local goshi called Iga Sokoku Ikki (伊賀惣国一揆, the "Iga republic").