開(ひら)けるto become opened up, to improve, to get better, to develop, to progress, to become civilized (civilised), to be up-to-date, to be enlightened, to be sensible

to open out (of a view, scenery, etc.), to spread out, to become clear (of a road, visibility, etc.), to open up

to improve (of luck, prospects, etc.), to get better

to develop (of a town, civilization, etc.), to become civilized, to modernize, to grow, to advance (of knowledge, ideas, etc.)

to be sensible, to be understanding, to be enlightened

to open (of a new road, railway, etc.), to be opened to traffic

to become populous, to become densely built, to become bustling