WARSAW, Nov. 11 (Xinhua) -- Poland marked a century of independence on Sunday, with major celebrations held in the country's capital of Warsaw.

Among the attendees were Polish President Andrzej Duda, Prime Minister Mateusz Morawiecki, and European Council President Donald Tusk, who is former Polish prime minister.

"It is a great joy that 100 years ago there were such people, such soldiers and such leaders ... who could be united in order to regain Poland, despite differences of opinion," said Duda during a speech at the Tomb of the Unknown Soldier in the Pilsudskiego Square in Warsaw.

"A free, independent and sovereign Poland was the single idea uniting them," he added.

In an address to Poles, Morawiecki said that Polish people should unite and making Poland to become stronger, richer and happier.

"Today, we can organize our home in a more efficient and just way, and that is also why we have this holiday, to confirm our own capabilities, to open up to coming years, to look to the future ... because our holiday is a great commitment to the heroes from 100 years ago," Morawiecki added.

The major celebrations were followed by large-scale marches through the city of Warsaw. Polish Interior Minister Joachim Brudzinski claimed that about 200,000 people took part in the march.

Poland celebrates the national day on Nov. 11 to commemorate the anniversary of the restoration of Poland's sovereignty in 1918, after 123 years of partition.