Complex sentence: The history of the Jordanian immigration to the United States is relatively recent, it seems that the first Jordanians who emigrated to this country did shortly after the Second World War (1945) in relatively small groups.
Split into simpler sentences: The history of the Jordanian immigration to the United States is relatively recent. It seems that the first Jordanians who emigrated to this country did it shortly after the Second World War (1945) in relatively small groups.