* Language is constantly evolving: The way people speak and the languages themselves change over time.
* Multiple languages were spoken: Even 100 years ago, there were countless languages spoken around the world.
* No single "global language" existed: While some languages were more dominant than others, no single language was spoken universally.
To figure out what language people spoke 100 years ago, you need to be more specific:
* Which location are you interested in? Different regions have their own languages.
* What kind of people are you thinking of? Different social groups might have spoken different languages.
For example:
* In the United States 100 years ago (1923), English was the dominant language, but there were also many other languages spoken by immigrant communities.
* In France 100 years ago (1923), French was the primary language.
* In China 100 years ago (1923), Mandarin was the most widely spoken language.
To get a more precise answer, you need to provide more context.