This is the 984th most frequent Russian word.
власти
"Власти" means "authorities" in English.
'Власти' in this sentence denotes the concept of power or being in a position of control.
Он всегда мечтал оказаться у власти.
He always dreamed of being in power.
In this sentence, 'власти' refers to the governing bodies or officials of the city.
Власти города приняли решение о строительстве нового парка.
The city's authorities made the decision to build a new park.
Here, 'власти' pertains to government officials or authorities in charge during the situation.