Here is a video of Senegal picking-up the litter.
"You often hear people say that football is a reflection of culture".
The World Cup is always an opportunity for nations to share their own unique approach to the attractive game, celebration in victory and the grief of defeat. The supporters of Japan came with bin bags and cleaned up their part of the stadium.
"Cleaning up after football matches is an extension of basic behaviors that are taught in school, where the children clean their school classrooms and hallways", North told the BBC.
European Union says it will start to impose tariffs on USA on Friday
Beijing has vowed to immediately retaliate with its own tariffs on US soybeans and other farm products in a direct shot at Mr. The United States has accused China of stealing US intellectual property, a charge Beijing denies.
People on Twitter also praised their efforts.
The fans, draped in Japanese flags and scarves, were filmed sweeping the stands of the 44,000-seat, bowl-shaped Mordovia Arena, where just a few minutes earlier they had wildly celebrated an unexpected victory over José Pékerman's side, quarter-finalists in 2014.
Japan and Senegal both produced surprise, vital wins in Group H on Tuesday. One clip of the clean-up operation, shared by Argentinean channel TyC Sports, has been viewed more than 4 million times.
Japan coach Akira Nishino talked before the match of his worry about the "psychological impact" of Monday's quake which hit the Japanese city of Osaka during morning rush hour, killing at least five people. However, that has led to Sanchez becoming a target of hate messages on social media with some even calling for his death.