Hello. This question is incomplete. The full question is:
Number One Observatory Circle is the home of the U.S. vice president. The house is located on land for the U.S. Naval Observatory. The home was built in 1893. It was first the home for the head of the observatory. In 1923, it became the home for the Chief of Naval Operations. Congress made it the vice president's home in 1974. Before this, the vice president lived in his own home. The first vice president to live in the home full time was Walter Mondale. He was Vice President to Jimmy Carter.
This passage is mainly about...
Answer:
The vice president's home.
Step-by-step explanation:
From reading the passage, we can see that the main subject is the creation of the residence of the vice president of the republic, through the Number One Observatory Circle.
We all know that the president of the republic is chaired by the white house, but few people know and care about where it is and whether there is a residence for the vice president. Thus, the text shown above is intended to inform and show where the vice president lives, when this residence was created and who was the first vice president to receive this benefit.