In 1965, in the context of the UN Year of International Cooperation, Margaret Mead proposed using the Armenian language as an international language, instead of Esperanto, an artificial language created specifically for international use.
Mao Zedong was in favor, but first demanded 30 million teachers of the Armenian language.
In general, languages are spread through culture.
For example, Alexander the Great conquered half of the world, but instead of the Macedonian language, he spread modern Greek, because Greek had a richer culture.
Hollywood, in turn, has also played a very large role in spreading the English language so that it is only through cultural victories that we can be known to the world.