This is the 2368th most frequent Russian word.
образовалась
"Formed" or "was formed."
In this sentence, 'образовалась' is used to describe the natural formation of something (a puddle) after an event (rain).
После дождя на дороге образовалась лужа.
After the rain, a puddle formed on the road.
Here, 'образовалась' indicates the physical process of frost forming due to environmental conditions.
На поверхности стакана из-за холода образовалась изморозь.
Frost formed on the surface of the glass due to the cold.
In this case, 'образовалась' is used metaphorically to represent the emergence of an abstract concept (a new idea) after collaborative actions (discussions).