Bilingualism is explained in any dictionary as the ability of an individual to use two languages fluently, and to alternate between them as needed. By extension to a country and not a nation, it is the coexistence of two official languages in the same state. Bilingualism is the simplest form of multilingualism, as opposed to unilingualism which means using one single language.
Can we survive when we speak one single language? Do we need to speak two or more languages fluently to survive in a globalized world?
What are the chances for job seekers to secure a job when they are unable to speak any other language but their mother tongue?