This is the 2118th most frequent Spanish word.
conlleva
"Conlleva" means "entails" or "involves."
In this sentence, 'conlleva' is used to indicate carrying with or including an implication, specifically the responsibility associated with important decisions.
Tomar decisiones importantes conlleva una gran responsabilidad.
Making important decisions entails great responsibility.
Here, 'conlleva' suggests the consequences or implications inherent in the action described, such as the challenges of relocating.
Mudarse a otro país conlleva enfrentar numerosos desafíos.
Moving to another country entails facing numerous challenges.
In this case, 'conlleva' refers to the expected requirements or conditions accompanying completing the project.