In comparing the Madrid bombings to the 9-11 terrorist attacks in the United States, there are some interesting numerical ties.
There were 911 days in-between the terror attacks in Madrid and Sept. 11, 2001 - or 9-11 as it has become known - when al-Qaida-backed terrorists slammed planes into the Pentagon, a field in Pennsylvania and the World Trade Center towers in New York, destroying them.
The Madrid bombings - which happened on 3-11 - also came 2-1/2 years to the day after the 9-11 attacks.
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