Final answer:
A spatially extended social network that spans multiple countries is known as a transnational community or organization. These span economic, political, and sociological domains, and include entities like the United Nations or global movements such as environmental sustainability advocacy.
Step-by-step explanation:
The term for a spatially extended social network that spans multiple countries is a transnational community or organization. These networks can encompass various realms, including economic, political, and sociological aspects that originate in one country and cross boundaries, freedoming ideas and culture to create a new type of community that exists beyond traditional nation-state lines. Prominent examples of such networks include international governmental organizations (IGOs) like the United Nations, which advocate for global citizenship and the concept of an international community, and cultural movements like the global environmental movement that unite individuals from around the globe around shared ideas of sustainability.
Through the lens of globalization, we can observe the interconnected nature of the world, with vibrant economic and political networks transcending physical territories, creating a complex web of interdependencies reflected vividly as if they were brightly colored lines connecting different points of the planet.