Final answer:
Pompey was a successful military commander who achieved great popularity, while Crassus had some initial success but ultimately faced failure.
Step-by-step explanation:
Pompey and Crassus were both powerful politicians and military commanders in ancient Rome. Pompey was known for his military conquests, including eliminating piracy from the Mediterranean, conquering the Jewish kingdom of Judea, and suppressing an ongoing revolt in Anatolia. He was one of the greatest Roman generals and had immense popularity.
Crassus, on the other hand, gained popularity by fighting against the slave revolt led by Spartacus. He used the support of disaffected wealthy Romans to accumulate a huge fortune. However, Crassus's military campaign against the Parthian Kingdom ended in disaster.
In terms of popularity and military conquests, Pompey was highly regarded and successful, while Crassus had some initial success but ultimately faced failure.