Complex sentence: According to Roman historian Appian, Seleucus also formed a "marriage relationship" with Chandragupta received 500 war elephants, which would prove decisive in the conflict ahead, culminating in the Battle of Ipsus.
Split into simpler sentences: According to Roman historian Appian, Seleucus also formed a "marriage relationship" with Chandragupta and received 500 war elephants. These animals would prove decisive in the conflict ahead, culminating in the Battle of Ipsus.