To what extent has Brexit impacted the UK borders negatively?

This is and IB Diploma High Level presentation.

The draft needs some changes to get the highest grades
1) Needs to be shortened to around 1000-1200 words
2) Needs even clearer link between the global political challenge of Borders and the key concepts: Sovereignty and Human Rights. Especially the Human Rights section should have clearer link between the concept and borders.
3) Link to theory of Realism and Liberalism is missing. This can be incoporated into the text, or added as a separate section .