Complex sentence: Founded around 1991 in Jordan, trained in 1999 in Afghanistan with financial support from Osama bin Laden, it has perpetrated bomb attacks since 2004 in Lebanon, Qatar, and fought the Syrian army in Syria from 2005 until March 2014.
Split into simpler sentences: Founded around 1991 in Jordan and trained in 1999 in Afghanistan with financial support from Osama bin Laden, the group has perpetrated several terrorist attacks since 2004 in countries such as Lebanon and Qatar. The group has also fought the Syrian army in Syria from 2005 until March 2014.