The document compares two significant terrorist attacks: the 9/11 attacks in the USA and the 26/11 attacks in Mumbai, highlighting their descriptions, modes of attack, and aftermaths. The 9/11 attack, carried out by al-Qaeda, resulted in approximately 3,000 deaths and led to extensive military and political responses from the US, while the 26/11 attack involved multiple coordinated attacks by terrorists in Mumbai, causing about 173 deaths. It also discusses comparisons in terms of casualties, involved agencies, and subsequent security measures implemented in response to these events.