合而為一

to close; to join; to fit; to unite; to gather; to be suitable; to match; to be equal to; whole; together

A conjunction connecting clauses or phrases; indicates addition, contrast, or a causal relationship; also used to indicate a change of state.

To do; to act; to make; to become; to be; to serve as; because of; for; by (passive voice marker).

The number one; single; a; as soon as; entire; whole; all; a "one" radical in Chinese characters; also used for clarity when spelling out numbers.