Original sentence: All the Arabs from the second wave have lost their language of Arabic and have completely blended with the local population.Although the exact number of Arab remains unknown, mostly due to ambiguous claims of descent, an 18th century academic estimated that the number of Afghan-Arabs/Arab-Afghans is at approximately 6,000 families.By then, many Arabs left or blended with locals as the Arabic identity in region began to undergo a significant change.Despite maintaining some clothing customs and attire, most of these Arabs gradually lost their original tongue of Arabic.During the Soviet-Afghan War, a small number of foreign Muslims, most of them Arabs, came to Afghanistan to help Afghans fight the Marxist regime and Soviet military.The historical details of this battle remains largely unknown, though the Afghans were nonetheless victorious.The route the Arabs selected to enter the area was from north-eastern Iran<ref>Arabic  During this time, some Arabs settled in the area and married locals and adopted new customs.They adopted local customs and Persian as their language.With their small number, the Arabs were not considered to be effective in fighting and helping the Mujahideen
Edited sentence: Although the exact number of Arab Afghans remains unknown, mostly due to ambiguous claims of descent, an 18th century academic estimated that the number of Afghan-Arabs/Arab-Afghans is at approximately 60,000 families.At the end of the 7th century, the Ummayad Arabs entered into the area now known as Afghanistan after decisively defeating the Sassanians in Nihawand.By then, many Arabs increasingly blended with locals as the Arabic identity in region began to undergo a significant change.Currently, while they still view themselves as Arab, almost all the Arabs from the second wave have lost their language of Arabic and have completely blended with the local population.Despite maintaining some clothing customs and attire, most of these Afghan-Arabs (or Arab-Afghans) gradually lost their original tongue of Arabic.During the Soviet-Afghan War, many Muslims, most of them Arabs, came to Afghanistan to help Afghans fight the Marxist regime and Soviet military.During this time, some Arabs settled in the area and married locals while adopting new customs.The historical details of this battle remains largely unknown, though the Arabs were nonetheless victorious.The route the Arabs selected to enter the area was from north-eastern Iran and thereafter into Herat where they stationed a large portion of their army before advancing toward eastern Afghanistan.They adopted local customs and Persian as their main language