Complex sentence: As a result, the time period following the battle witnessed an upsurge of support for Palestinian paramilitary elements (the fedayeen) within Jordan from other Arab countries, the fedayeen soon became a threat to Jordan's rule of law.
Split into simpler sentences: As a result, the time period following the battle witnessed an upsurge of support for Palestinian paramilitary elements (the fedayeen) within Jordan from other Arab countries. The fedayeen activities soon became a threat to Jordan's rule of law.