This is the 16195th most frequent Polish word.
uniemożliwiły
"Made impossible" or "prevented."
In this sentence, "uniemożliwiły" conveys that the heavy snowfall prevented commuting to work, limiting feasibility.
Silne opady śniegu uniemożliwiły dojazd do pracy.
Heavy snowfall made it impossible to commute to work.
Here, "uniemożliwiły" indicates that the power outage stopped progress on the project, preventing continuation.
Awaria prądu uniemożliwiła kontynuację projektu.
The power outage made the continuation of the project impossible.
"Uniemożliwiły" in this sentence means that technical problems hindered the ability to perform the live broadcast, preventing execution.