Why were so many people affected by Chernobyl?

The Chernobyl disaster in 1986 released a massive amount of radioactive material into the atmosphere, affecting millions across Europe. The explosion and subsequent fire spread radioactive isotopes, contaminating air, soil, and water, leading to widespread health issues, including increased cancer rates. Additionally, inadequate evacuation measures and poor communication by the Soviet government exacerbated the impact, leaving many people unprotected from the fallout. The long-term consequences of the disaster continue to affect the environment and public health to this day.