Carlota Ciganda, Beatriz Recari, Belen Mozo and Azahara Munoz were victorious as Spain finished top of the group.
Sweden were four points behind Spain with 11, while South Korea and Japan finished a further point back.
With nine points, Thailand ended up fifth at the team match-play tournament played at the Caves Valley Golf Club.
In a shock, the United States failed to advance from the pool stages on Saturday, eliminated alongside Chinese Taipei and Australia.
Japan were the best-placed team heading into Sunday's singles as nations continued to be awarded two points for wins.
Park Inbee gave South Korea hope with a comfortable 4 and 2 win over Sweden's Caroline Hedwall.
Ciganda thrashed Choi Na-yeon (South Korea) 8 and 6 after making seven birdies in 12 holes.
While Se Yeon-ryu had a 1-up win against Sakura Yokomine (Japan), Spain's dominance was too much.
Recari beat Sweden's Mikaela Parmlid 3 and 2, Mozo overcame Thai Moriya Jutanugarn by the same score and Munoz edged Japan's Ai Miyazato 2 and 1.