De ciutat a Smart City

Using the Mymaps tool from Google:

Find the 20 most populated cities in the world and place them with a marker. Then indicates population and population density data.

1. Search for 10 cities considered Smart Cities, locate them with a color marker different from the previous one and explain a specific feature that defines it as Smart City.
2. Touch up the outline of all the states on the map that contain a Smart City. Then paint them in a different color.
3. Place the capital of each state with a marker.
4. Check if all Smart City corresponds with capitals or not and change the color marker if they are not.
5. Taking into account point 2, to which continent are more Smart Cities? What's the reason?