Question

find the appositive. if it is nonrestrictive, set it off with commas. if it is restrictive, submit the text without making any changes.

many historians agree that the soviet launch of the satellite sputnik i began the space race between the united states and the ussr.

Explanation:

The appositive "Sputnik I" is nonrestrictive because it provides extra, non-essential information to identify the satellite (the phrase "the satellite" already refers to a specific object, and the name is additional context). Nonrestrictive appositives require commas to set them off from the rest of the sentence.

Answer:

Many historians agree that the Soviet launch of the satellite, Sputnik I, began the space race between the United States and the USSR.