How if Afghanistan related to the attacks on 9-11?

Afghanistan was closely linked to the 9/11 attacks primarily because al-Qaeda, the terrorist group responsible for the attacks, was based there and received support from the Taliban government. After the attacks, the U.S. launched military operations in Afghanistan to dismantle al-Qaeda and remove the Taliban from power, marking the beginning of a prolonged conflict in the region. The U.S. government's justification for this intervention was rooted in the Taliban's refusal to extradite al-Qaeda leader Osama bin Laden, who orchestrated the attacks.