This is the 10332nd most frequent Spanish word.
concentraron
"Concentraron" means "they concentrated" or "they gathered."
In this context, 'concentraron' refers to devoting full attention or focus to a specific activity.
Los estudiantes se concentraron en terminar su tarea a tiempo.
The students focused on finishing their homework on time.
Here, 'se concentraron' means to convene or gather a group of people in one place for a specific purpose.
Se concentraron las autoridades locales para discutir sobre el proyecto.
The local authorities gathered to discuss the project.
In this sentence, 'concentraron' implies organizing or bringing together a group (e.g., troops) at a certain location or state.