Why is a territory considered as a major element of a slq

The term territorial state is used to refer to a state, typical of the High Middle Ages, since around 1000 AD, and "other large-scale complex organizations that attained size, stability, capacity, efficiency, and territorial reach not seen since antiquity."[1] The term territorial state is also understood as “coercion-wielding organizations that are distinct from households and kinship groups and exercise clear priority in some respects over all other organizations within substantial territories.”[2]

can you explain it better

portugal is the westernmost country in europe.