One of the reactor faced a sudden power increase which made its core unstable and it exploded, eventually resulting the radioactive fuel exposed to the atmosphere directly and caused a disaster killing many.
I believe you meant to ask "how did Chernobyl radiation spread?"
But if not, then don't read the following
Wind caused radiation from Chernobyl to spread, and possible trade. And since the Soviets did not bother to contain it in time, many other areas were affected/
Going into all the details of these problems is too long for this site. There are several books available that cover the accident and its aftermath in detail.
Yes, Chernobyl is a city.
Chernobyl is in the country of Ukrain.
Our Lady of Chernobyl was created in 1994.
what is the chernobyl power plant used for
The most affected towns were Chernobyl and Prypiat.
Yes, Chernobyl
1986
It did explode, but this was due to a surge in steam pressure which blew off the top of the reactor, it was not a nuclear explosion as in a nuclear weapon.
Yes, Chernobyl is a city.
Alla Yaroshinska has written: 'Chernobyl' 'Chernobyl' 'Chernobyl, the forbidden truth'
No, Chernobyl is abandoned
Chernobyl Heart was created in 2003.
No. Chernobyl is in Russia.
At the power plant at Chernobyl in the Ukraine
Chernobyl Heart was created in 2003.
The Truth About Chernobyl was created in 1991.
Chernobyl - city - was created in 1193.