Complex sentence: From a western perspective, Yoshiharu is significant, as he was shogun in 1542, when the first contact of Japan with the European West when a Portuguese ship, blown off its course to China, landed in Japan.
Split into simpler sentences: From a western perspective, Yoshiharu is significant, as he was shogun in 1542, when the first contact of Japan with the European West took place. A Portuguese ship, blown off its course to China, landed in Japan.