Which football team won a La Liga trophy in the season that started on 29 August 1998 and finished on 20 June 1999?
1998–99 La Liga The 1998–99 La Liga season, the 68th since its establishment, started on 29 August 1998 and finished on 20 June 1999.
1999–2000 Primeira Liga The 1999–2000 Primeira Liga was the 66th season of top-tier football in Portugal. The competition was renamed Campeonato Nacional da Primeira Liga (National Championship of the First League), Primeira Liga for short, after the Portuguese League for Professional Football took control of the two top nationwide leagues in 1999. It started on 20 August 1999 and ended on 14 May 2000. The league was contested by 18 clubs with Porto as the defending champions.