<div class="small-6 columns">
  {{select-list
    content=territories
    on-change=(action (mut selectedTerritory))
    selectedValue=selectedTerritory
    value=selectedTerritory
    required='true' }}
</div>

<div class="small-6 columns">
  {{select-list
    content=districtsByTerritory
    on-change=(action (mut selectedDistrict))
    selectedValue=selectedDistrict
    value=selectedDistrict
    required='true' }}
</div>

<div class="small-6 columns">
  {{select-list
    content=territories
    on-change=(action 'onTerritoryChange')
    selectedValue=selectedTerritory
    value=selectedTerritory
    required='true' }}
</div>

<div class="small-6 columns">
  {{select-list
    content=districtsByTerritory
    on-change=(action (mut selectedDistrict))
    selectedValue=selectedDistrict
    value=selectedDistrict
    required='true' }}
</div>

Initialize district on territory change
Initialize district on territory change
