To hide "use Ctrl + scroll to enlarge the map" in React, insert options={{ gestureHandling: "greedy" }}> in
<GoogleMap defaultZoom={15} defaultCenter={{ lat: 44.814346, lng: 20.458047 }} options={{ gestureHandling: "greedy" }}> <Marker position={{ lat: 44.814346, lng: 20.458047 }} /> </GoogleMap>
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