Line graphs for different countries might even be able to show in one visualization, which allows users to have a clearer comparison with country patterns.

Lockdown line is great allowing audience to have a better idea of what happended before and after this time point! It would be nicer to look at country dimension as well!

Instead of having several different visualizations, you might consider having a more sophisticated map. For example, clicking one region, and it shows employment rate, unemployment rate or other information for this region in line charts/bar charts or whatever visualizations that work!

Overall, your project is clear, complete and well-written. Congrats and have a great winter break!