Hydration of an Alkene (it's the reverse of Dehydration of an Alcohol)
All reverse steps for this reaction are the same.
Things that determine regiosepectivity: Type of Carbocation, the number of Substituents, and if there is Conjugation

seen from Brazil
seen from Yemen

seen from Malaysia
seen from United Kingdom
seen from Brazil

seen from United States

seen from France
seen from Brazil

seen from New Zealand
seen from Brazil
seen from Singapore
seen from United Kingdom
seen from Saudi Arabia
seen from Japan

seen from Saudi Arabia
seen from United States

seen from Japan
seen from New Zealand

seen from Malaysia
seen from China
Hydration of an Alkene (it's the reverse of Dehydration of an Alcohol)
All reverse steps for this reaction are the same.
Things that determine regiosepectivity: Type of Carbocation, the number of Substituents, and if there is Conjugation