England captain Courtney Lawes hailed the determination of his team-mates after the tourists sealed a series victory over Australia on Saturday.
Eddie Jones' side made it back-to-back series wins Down Under - adding to their 2016 triumph - as they recovered from a slow start to defeat the Wallabies 21-17 in the deciding Test.
The hosts, who won the opening Test 30-28 before they were pegged back 25-17 in the second last weekend, dominated early proceedings at Sydney Cricket Ground, establishing a 10-3 lead thanks to Tom Wright's try.
But England came back before the break through Freddie Steward, while Marcus Smith also crossed in the second half to put the 2003 world champions in control at 21-10 to the good.
Folau Fainga'a went over late on as the hosts set up a grandstand finish, but Lawes and his team-mates stood firm to lift the Ella-Mobbs Cup.
"It really shows what it means for us to play this team," the skipper told Sky Sports. "We had a tough start to this series, but have showed what we're made of.
"We didn't come out how we wanted to today. The message at half-time was to stick together. We knew what we wanted to do. We showed what it means to play for this team.
"We did what we wanted to do to improve week on week. It's a proud moment, for sure.
"We've still got a lot to learn. We can win a game like this where you don't really fire a shot, and you take your chances when you can. We did a lot of defending."
Meanwhile, try scorer Steward also heaped praise on the efforts of Jones' side, saying: "The boys just dug in and gave everything. To win with an effort like that, it was a proper Test match. It's special.
"To come here, dig in with an effort like that at the back end of the season is pretty awesome. It is a great way to end the season especially having been one down is amazing."