Meaning of ちや in Japanese

来週から中間テストだ。一夜漬けじゃ、太刀打ちできない問題ばかりだぞ。今日から始めろよ。
Midterm exams start next week. Just cramming the night before won't get you ready. There'll be a lot of tough questions. You should start studying today.

万次郎はこの二国をお互いに親しくするために一役果たしました。
Manjiro played a part in making the two countries friends with each other.

彼女は一躍有名になった。
She suddenly became famous.