Create 3 visualizations for our data on the frontend

There are three visualizations that need to be added for our site. The first of which is a bubble chart showing the number of attractions of each type. The second is a map of the U.S. with states shaded according to how many universities they have. And the last is a bar graph showing how many major cities are in each state. Use the D3 Library and new endpoints created on the backend to make these visualizations. This task is expected to take about 3 hours.