The petroleum industry is the most important sector of the local economy.
In the second half of the 19th century, agriculture was the most important economic sector.
Education is also an important sector of the city's economy.
Manufacturing is the single most important sector of the American economy.
It is the second most important sector of the economy in the region after the industry.
An important sector is life science and research & development plays a major role in the economy of the city.
The second most important sector of the city's economy is the fish industry.
Tourism is now already an important economic sector in Europe and also has very high potential for development over the next few years.
The 3rd Army saw lots of action in important sectors.
Service and food industry represent the most important sectors of the economy.
