Question: When did Alanders rejoin the country that has a football league with Marcus Mårtensson playing?

<P0-S0> Åland is a collection of around 6,500 islands in the Baltic Sea, midway between Sweden and Finland. <P0-S1> The islands are almost exclusively Swedish-speaking, but in 1809, the Åland Islands, along with Finland, were taken by Imperial Russia. <P0-S2> In December 1917, during the turmoil of the Russian October Revolution, Finland declared its independence, but most of the Ålanders wished to rejoin Sweden. <P0-S3> The Finnish government considered the islands to be a part of their new nation, as the Russians had included Åland in the Grand Duchy of Finland, formed in 1809. <P0-S4> By 1920, the dispute had escalated to the point that there was danger of war. <P0-S5> The British government referred the problem to the League's Council, but Finland would not let the League intervene, as they considered it an internal matter. <P0-S6> The League created a small panel to decide if it should investigate the matter and, with an affirmative response, a neutral commission was created. <P0-S7> In June 1921, the League announced its decision: the islands were to remain a part of Finland, but with guaranteed protection of the islanders, including demilitarisation. <P0-S8> With Sweden's reluctant agreement, this became the first European international agreement concluded directly through the League. <SEP> <P1-S0> boston has teams in the four major north american professional sports leagues plus major league soccer, and has won 36 championships in these leagues, as of 2014[update]. <P1-S1> it is one of six cities (along with chicago, detroit, los angeles, new york and philadelphia) to have won championships in all four major sports. <P1-S2> it has been suggested that boston is the new "titletown, usa", as the city's professional sports teams have won nine championships since 2001: patriots (2001, 2003, 2004, and 2014), red sox (2004, 2007, and 2013), celtics (2008), and bruins (2011). <P1-S3> this love of sports has made boston the united states olympic committee's choice to bid to hold the 2024 summer olympic games, but the city cited financial concerns when it withdrew its bid on july 27, 2015. <SEP> <P2-S0> horseed fc is a somali football club based in horseed, somalia. <P2-S1> it is seven times champion of the somalia league. <P2-S2> a team of the armed forces of somalia, horseed sc was among the most formidable and recognized football clubs in the country. <P2-S3> after the civil war broke out, it discontinued operations, but has been revived in 2013 by gen dahir aden elmi commander of the somalia armed forces. <P2-S4> gen elmi revived all the different teams of horseed sports club with emphasis on the football team which again began to compete in the somalia serie a league. <SEP> <P3-S0> After the season had finished Nilsson told the club that he wanted more playing time and when Superettan club Örebro SK made a bid for the midfielder he decided to sign with them in January 2013. <SEP> <P4-S0> The 2014 Superettan, part of the 2014 Swedish football season, was the 14th season of Superettan, Sweden's second-tier football league in its current format. <P4-S1> The 2014 fixtures were released on 20 December 2013. <P4-S2> The season started on 5 April 2014 and concluded on 2 November 2014. <SEP> <P5-S0> Marcus Mårtensson (born 23 April 1990) is a Swedish footballer who plays for Stafsinge IF on loan from Falkenbergs FF as a midfielder.