Answer:
President Bush ordered military strikes in Afghanistan because the Taliban has allowed terrorists to operate out of Afghanistan.
Step-by-step explanation:
The war in Afghanistan began on 7 October 2001, when the United States, Great Britain, Australia and the Northern Alliance of Afghanistan launched a military operation called Enduring Freedom. The main cause of the invasion was the terrorist attacks in the United States on September 11, as the American government blamed the Taliban regime of supporting and hosting terrorist groups within their territory. Therefore, the invasion was carried out with the aim of destroying the Al-Qaeda terrorist network that used Afghanistan as its main base of operations, as well as overturning the Taliban regime that supported it.
On 20 September 2001, President George W. Bush demanded that the Taliban extradite Osama Bin Laden and destroy Al-Qaeda bases in Afghanistan. On 5 October, the Taliban offered that Bin Laden be tried by an Afghan court, but only if the US provided the Taliban regime with solid evidence of Bin Laden's guilt, in a movement that gave him effective time to run away from the country. The United States correctly interpreted this movement as a nasty trick, and launched a military operation in Afghanistan on October 7.