<div class="form-group col-md-6">
    <select name="province" id="province" class="form-control" required>
    <option value="">Provincia</option>
        @foreach($provinces as $province)
            <option value="{{ $province->id }}">{{ $province->province }}</option>
       @endforeach
    </select>
</div>

<div class="form-group col-md-6">
    {!! Form::select('province', $provinces) !!}
</div>