sentences:  Charles Gustav was crowned on 7 June 1654, the day after his cousin Christina abdicated.The beginning of Charles X's reign concentrated on the healing of domestic discords and on the rallying of all the forces of the nation round his standard for a new policy of conquest.On the recommendation of his predecessor, he contracted a political marriage on 24 October 1654 with Hedwig Eleonora, the daughter of Frederick III, Duke of Holstein-Gottorp.