The Secretary of State of the Unites States on Wednesday reiterated that the US supports a strong and united Spain, while congratulating the Spanish people on the occasion of Spain's National Day on Oct. 12.

"As you celebrate today, know that the United States values our enduring partnership and supports a strong and united Spain," Rex Tillerson said in a statement on the eve of the country's National Day.

Tillerson insisted that "the United States and Spain are great friends and close allies," and recalled Spanish Prime Minister Mariano Rajoy's recent visit to the White House on Sep. 26, where he met with US President Donald Trump.

"As the President said during his September 26 meeting with President Rajoy, the deep relationship between our two peoples is a strong foundation for lasting cooperation," the head of US diplomacy added.

"Our bonds, culture, and commerce go back many centuries and continue to deepen. We are allies and partners in efforts to counter terrorism, improve global security, support economic prosperity, and ensure people all over the world can live in freedom and peace," he said.

Spain celebrates the National Day on the 12th of October, but this year it will do so amid the crisis of Catalonia's independence, whose outcome is currently in dispute.