Inserting List Data into dropdown REST, SharePoint

i'm column of location in my sharepoint list, but i want the values put into a dropdown list. I'm not sure what i'm doing wrong. but i cant get the values to show in the dropdown. Any help will be appreciated

<script type="text/javascript">

var count = {};
var keys = [];

function Regions () {

    var requestUri = _spPageContextInfo.webAbsoluteUrl +"/_api/Web/Lists/getByTitle('NPT Form')/items?$select=Location";

             $('#RegionList').html('<option value="">All Region</option>');
             // execute AJAX request
                $.ajax({
                                url: requestUri,
                                type: "GET",
                                async:false,
                                headers: { "ACCEPT": "application/json;odata=verbose" },
                                success: function (data) {
                                                //console.log(data);
                                                //var count = 0;
                                                dataResults = data.d.results;
                                                var Location = [];



                                                //console.log(dataResults);
                                                for (i=0; i< data.d.results.length; i++) {
                                                    var region = dataResults[i].Location.split(':')[0];
                                                    //console.log(region);

                                                        if (count[region] === undefined){
                                                        count[region] = 1;
                                                        keys.push(region);
                                                        //<option value=”‘ + itemId + ‘”selected>’ + itemId + ‘</option>’;
                                                        $('#RegionList').append('<option>'+region+'</option>');
                                                        console.log(region);

                                                       }else {
                                                        count[region] = count[region] + 1;
                                                    }




                                                }

                                                  console.log(keys);
                                  },

                        });


}


Regions();

</script><div><table style="margin: 20px 20px 20px 14px;width: 97%;;"><tr><td style="padding:2px;background-color:#d5eaf0;"><b>Year:</b></td><td style="padding:2px;background-color:#d5eaf0;"><b>
	Region:</b></td><td style="padding:2px;background-color:#d5eaf0;"><b>
	Discipline:</b></td><td style="padding:2px;background-color:#d5eaf0;"><b>
	Service Line:</b></td><td style="padding:2px;background-color:#d5eaf0;"><b>
	Activity:</b></td></tr><tr><td style="padding:2px;background-color:#d5eaf0;"><select style="width:auto" class="form-control" id="YearList"></select></td><td style="padding:2px;background-color:#d5eaf0;"><select class="form-control" id="RegionList"></select></td><td style="padding:2px;background-color:#d5eaf0;"><select class="form-control" id="DiscList"></select></td><td style="padding:2px;background-color:#d5eaf0;"><select style="width:auto" class="form-control" id="SeLiList"></select></td><td style="padding:2px;background-color:#d5eaf0;"><select class="form-control" id="ActiList"></select></td></tr></table></div>