Conjunction used to introduce a result or conclusion based on the preceding context. Often used at the beginning of a sentence to summarize or draw a conclusion.
こうして、私たちは新しいプロジェクトを始めた。
Thus, we started a new project.
毎日練習して、こうして上手になった。
I practiced every day, and in this way I became good at it.
And so the two of them ended up getting married.
And so, in this way, a year went by.