Complex sentence: Learning that Patricia and Humberto are not selling their lands on good terms, he decides to invade their lands on their very wedding night, threating them to sign the sell papers, when Humberto refuses to sign anyway, Humberto killed him without any remorse.
Split into simpler sentences: Learning that Patricia and Humberto are not selling their lands on good terms, he decides to invade their lands on their very wedding night, threatening them into signing the sale papers. When Humberto refuses to sign anyway, Humberto killed him without any remorse.