Final answer:
The author's purpose in writing about a borderless world is likely to persuade readers on the benefits of globalization and to inform about the political and economic dimensions of a world with diminishing national borders. The text hints at the author's advocacy for trade, cultural exchange, and a challenge to the conventional understanding of sovereignty.
Step-by-step explanation:
The author's main purpose in writing an article titled 'Building a borderless world' seems to be advocating for the diminishing importance of national borders in the era of globalization and promoting a more interconnected global community. This is supported by the text's mention of walls coming down and bridges being built between different cultures and societies, suggesting the author aims to persuade readers of the benefits of a borderless world. Additionally, terms such as 'immigration', 'border security', and 'globalization' indicate that the subject matter involves political and economic aspects of international relations.
Evidence that suggests the author's purpose includes the discussion of an increasingly global world where borders matter less, implying a strong stance on the advantages of free trade and cultural exchange. To further assess this purpose, one might consider the rhetorical context mentioned in the source provided, which includes the genre of social media, the audience, and the culture that shows a conflict between immigrants and the administration. These elements illustrate the writer's intent to inform and possibly challenge conventional expectations regarding national sovereignty and open borders.