In ancient times they used cave painting to communicate.
During the ancient egypt, communication was mainy through hieroglyphics. They would inscribe messages on temples, monuments and tombs. They had both religious and propoaganda purposes.
During ancient Greece communication was mainly oral and visual, but they also used fire and smoke to send quick and urgent messages. They also used the papyri to write what was happening, innovations, culture, or the ordirary life of citizens.
In ancient Rome, communication was maily by talking in public to the masses and using icinographies to be read from far away. They also communicated through writing, introducing the Latin alphabet. They wrote in stones, and wax tables by scrawling. They wrote poems and histories on papyrus, and trading accounts. They also developed a postal service to help the governors of distant provinces in communicating with citizens.
In medieval times, they had messengers in order for information to arrive to the king. News spread out quicky. (it is believed that rumours spreding out quickly began in this era).
In the 1440, the printing press was created by Gutenberg, so news could be spreaded much more faster.
Nowadays we use digital tools which allow us to be even faster and communicate worldwide, with the risk of producing fake news.