JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.2.0.min.js"></script>
<script src="https://maps.google.com/maps/api/js?"></script>
<div id="map"></div>

CSS

#map {
		  height: 100%;
		}
		html, body {
		  height: 100%;
		  margin: 0;
		  padding: 0;
		}

JavaScript

var wiki_page_list = [
			"List_of_airports_in_Alberta",
			"List_of_airports_in_British_Columbia",
			"List_of_airports_in_Manitoba",
			"List_of_airports_in_New_Brunswick",
			"List_of_airports_in_Newfoundland_and_Labrador",
			"List_of_airports_in_Nova_Scotia",
			"List_of_airports_in_the_Northwest_Territories",
			"List_of_airports_in_Nunavut",
			"List_of_airports_in_Ontario",
			"List_of_airports_in_Prince_Edward_Island",
			"List_of_airports_in_Quebec",
			"List_of_airports_in_Saskatchewan",
			"List_of_airports_in_Yukon",
		];
	
		var aerodromes = [];
		var deferreds = [];
		var map;
	
		function main()
		{
			map = new google.maps.Map(document.getElementById('map'), {
				zoom: 7,
				center: {lat: 45.612, lng: -75.196},
				mapTypeId: 'terrain'
			});
			initCoords();
			$.when.apply(null, deferreds).done(function() {
				initMap();
			});
		}
	
		function initCoords()
		{
			$.each(wiki_page_list, function( key, value ) {
				full_url = "https://en.wikipedia.org/w/api.php?action=parse&section=1&prop=text&format=json&callback=?&page=" + value,
				deferreds.push($.ajax({
					type: "GET",
					url: full_url,
					contentType: "application/json; charset=utf-8",
					async: false,
					dataType: "json",
					success: function (data, textStatus, jqXHR) {
						html = $( data['parse']['text']['*'] );
						eles = html.find(".geo");
						coords = $.each(eles, function( key, element ) {
							coords = element.innerText.split(';');
							lat_long = {lat : parseFloat(coords[0]), lng: parseFloat(coords[1])};
							aerodromes.push(lat_long);
						});
					}
				}));
			});
		}
	
		function initMap()
		{
			for (var idx in aerodromes) {
				var exclude = new google.maps.Circle({
					strokeColor: '#FF0000',
					strokeOpacity: 0.3,
					strokeWeight: 1,
					fillColor: '#FF0000',
					fillOpacity: 0.25,
					map: map,
					center: aerodromes[idx],
					radius: 9000 // 9km
				});
			}
		}
    
    main();