Final answer:
A large group of people sharing a land area and a common language is known as a nation. Nations have a shared identity based on common history, religion, or ethnic background and often have their own government or system of rule.
Step-by-step explanation:
A large group of people sharing a land area and a common language is known as a nation. Nations have a shared identity based on common history, religion, or ethnic background and often have their own government or system of rule. Within a nation, there can be smaller groups called speech communities that use the common language in special ways unique to that group.