Hye Jin Choi and Min Ji Park each shot 5-under 67 on Saturday to complete South Korea's record-tying 21-stroke victory in the Women's World Amateur Team Championships.
South Korea won the Espirito Santo Trophy for the fourth time, following victories in 1996, 2010 and 2012.
"The key is the team play," captain Sang-Won Ko said. "We have been interviewed over the last few days and the players have been so focused on team play. That makes everyone tight and makes for good results."
The 17-year-old Choi won the team title at 14 under, beating Denmark's Lyng Thomsen by two strokes and the 16-year-old Park by five shots.
"We really did our best and we performed really well," said Choi, the low amateur in the U.S. Women's Open. "I am very happy now."
The United States also won by 21 strokes in 1998. South Korea's 29-under 547 total was a stroke off its tournament record of 546 set in 2010.