The Three Lions followed manager Southgate's advice to grab the chance of a lifetime and produced an industrious display that made a mockery of Swedish quips about entitlement in the build-up.
Alli proved his critics wrong two minutes before the hour mark when he met Kieran Trippier's cross with a deft header to put England firmly in the ascendancy.
The 31-year old, capped 75 times by his country. played every nine of England's ten World Cup qualifiers but Jordan Pickford, Jack Butland and Nick Pope all got the nod for the showpiece in Russian Federation.
England goalkeeper Jordan Pickford made several crucial saves throughout the match to record the Three Lions' first clean sheet at Russian Federation 2018. It was England's eighth set-piece goal of its 11 in Russian Federation, and the centre back's first in global football.
"I gathered the players on the pitch and told them we had a bloody good tournament".
There was emotional scenes in Russian Federation and at home among the England fans, who have long suffered from tournament heartbreak. "And also that little ball that Jesse sent in for Dele, that was great".
And while both teams, drinking side-by-side, were civil enough during the game. He denied the Swedes several more times in the second half.
England forward Raheem Sterling has yet to score at the World Cup from his unusual position as the support striker to Kane, and his finishing let him down against Sweden.
If England do beat Sweden and reach the last four, their next match will be in Moscow on Wednesday night, which will be far more accessible.
Maguire then lashed over after a scene of panic in the Sweden area as England chased a third goal, although they were twice indebted to Pickford for preserving their two-goal lead.
And when asked about his own side's poor performance, Andersson commented how it was always going to be tough against a 'really good opponent'.
- Ambulances leave from Thai cave as rescue underway
- June's employment gains, job hunter influx clears way for rate hike
- Croatia beat Russian Federation on penalties to reach semis
- Horner says Red Bulls are in the running for both F1 titles
- Liverpool fans spot another embarrassing Karius moment in warmup vs Chester
- June Sees Employment Rates Increase 213000
- Wilshere Holds West Ham Talks After Arsenal Exit
- Thunder just trying to figure out how to get rid of Carmelo
- Trump mulls Supreme Court choice from 2 or 3 candidates
- England fans 'dare to dream' after win over Sweden