Stuart Lancaster admits he is delighted with the performances of his team after England beat Argentina 51-26 in Buenos Aires.
The victory sealed a 2-0 Test series triumph over the Pumas, and a first clean sweep for the visitors.
And England's displays have also given Lancaster much to think about in terms of future selection.
"I am delighted to get the series victory. We had not achieved that before (with a clean sweep)," Lancaster said.
"Credit to Argentina. They improved this week and put us under a lot of pressure so it is even more pleasing to have scored 50 points.
"One of our goals was to win all four games on tour, including the Barbarians game. Objective one achieved.
"Objective two was to develop other options and look at increasing our selection decisions, which has also been achieved.
"In terms of our evolution, this tour has been critical. Some of the young players have gained a huge amount of experience coming on this tour and we have developed new leaders.
"We can look forward to the autumn internationals having won seven of the last eight games."