Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Archaeological Ruins at Moenjodaro' has mentioned 'Fortifications' in the following places:
Occurrence Sentence Text Source
Contents 1 Etymology 2 Location 3 Historical context 4 Rediscovery and excavation 5 Architecture and urban infrastructure 5.1 Major buildings 5.2 Fortifications 5.3 Water supply and wells 5.4 Flooding and rebuilding 6 Notable artefacts 6.1 Mother Goddess Idol 6.2 Dancing Girl 6.3 Priest-King 6.4 Pashupati seal 6.5 Seven-stranded necklace 7 Conservation and current state 7.1 2014 Sindh Festival 8 Climate 9 See also 10 References 10.1 Bibliography 11 External links
Fortifications
Mohenjo-daro had no series of city walls, but was fortified with guard towers to the west of the main settlement, and defensive fortifications to the south.
Considering these fortifications and the structure of other major Indus valley cities like Harappa, it is postulated that Mohenjo-daro was an administrative center.