This is the purpose of an argument: to offer reasons and evidence for the purpose of establishing the truth value of a proposition, which can mean either establishing that the proposition is true or establishing that the proposition is false. If a series of statements does not do this, it isnt an argument.
Isabella of Castile was born in the little city of Madrigal on the 27th of April, 1451. Her father was John II. of Castile, and her mother was his second wife, Isabella, a princess of Portugal. Her father died when she was scarcely four years old leaving his kingdom to his eldest son, Henry, the child of his first wife.
During his campaigns, Murcia submitted to his son Alfonso (later Alfonso X), and the Muslim kingdom of Granada became his vassal. 1  Ferdinand was the son of Alfonso IX of Leon and Berenguela, daughter of Alfonso VIII of Castile. At birth, he was the heir to Leon, but his uncle, Henry I of Castile, died young, and his mother inherited the crown of Castile, which she conferred on him.