Since there are no options presented in this sentence, I will just give the correction directly. The given sentence above is an example of a compound sentence. A compound sentence is a kind of sentence that contains two independent clauses connected by a coordinating conjunction. In putting the semi-colon, this punctuation mark serves as the coordinator between these two clauses. Here is the correct sentence:
The United States did not have any women astronauts until 1978; however, the Soviet Union sent a woman into space in 1963.
Hope this helps.
