The phrase "area constituted" is correct and usable in written English.
It can be used in contexts where you are describing a specific region or space that has been formed or established for a particular purpose.
Example: "The area constituted for the research project was carefully selected to ensure diverse ecological conditions."
Alternatives: "region established" or "zone created".
Ethnicity is not easy to establish, however, and the fact that, for example, the Romans ascribed an area to a particular people does not necessarily mean that those inhabiting that area constituted an ethnic and linguistic group.
A small antenna covering wide area is placed on each satellite with the total antenna area constituted by all the small antennas satisfying the minimum antenna area requirement.
Coarse woody debris and LFH covered 64%% (se = 3%%) of the ground area after harvesting activities, the remaining area constituted mineral soil.
This vast geographical area constituted the Carolingian Empire, a territory united by the military campaigns of Charlemagne in the later eighth century, and holding together, more or less, through the reigns of his successors until the late ninth century.
At the time, the Jabal al-Druze area constituted an autonomous zone (existing between 1922 and 1936) within the French Mandate of Syria (established in 1920).
First, the Cumaná city area constituted the source of Cumaná morphotype, and migrants from this area spread widely throughout the Cariaco drainage.
Refusing to leave or returning to the area constitutes a criminal offence.
The population is concentrated in a limited area, constituting an easy target for missiles.
Its land area constitutes about 60 percent of Sweden's total territory.
The area constitutes a veritable galaxy of Michelin stars, supposedly more of them per capita than anywhere else.
Accurate prediction of a flood inundation area constitutes an essential part of a flood forecasting system.
