original: Dubai maintained its importance as a trade route through the 1970s and 1980s.
simplifications: Dubai continued to be an important trade route in the 1970s and 1980s. Dubai was an important trade route in the 1970s and 1980s. Dubai kept it's status as a trade route from the 1970's - 80's. Dubai was an important trade route in the 70s and 80s. Dubai continued to be an important trade route through the 1970s and 1980s. Dubai kept its importance as a trade route through the 1970s and 1980s. Dubai stayed an important trade route through the 1970s and 1980s. Dubai stayed an important trade route through the 1970s and 1980s. Dubai was important because it was a trade route in the 1970s and 1980s. Dubai kept its importance as a trade route through the 1970s and 1980s.