One. He wasn't an explorer. He left for China with his father at 17 years old because his father was a merchant who traded with the Chinese. He stayed in China for 25 years.
four
4
he made 2
1492. I dont know how may voyages though
columbus made four different voyages from spain to america
four
He had four voyages in total
He had four voyages in total
He made 21 voyages!
he made 4 voyages
Columbus made 4 voyages Columbus made 4 voyages
three voyages
He made 3 voyages of exploration.
Seven
7
Seven
Sindbad the sailor supposedly made seven voyages.