Final answer:
The 1998 bombings of American embassies in Kenya and Tanzania, which killed and injured hundreds, preceded the September 11, 2001 attacks. These earlier bombings were also linked to Al-Qaeda.
Step-by-step explanation:
The attacks on September 11, 2001, were a tragic moment in world history, marking the entrance into a period of intense global terrorism concerns and the beginning of the War on Terror. These attacks were indeed preceded by other terrorist actions, including the 1998 bombings on American embassies in Kenya and Tanzania. The Dar es Salaam blast killed 11 and injured 85. These bombings were also linked to Al-Qaeda, the same organization that would later carry out the 9/11 attacks.