The name of the man was Aaron.
Jeroboam was the chief originator in leading Israel (the Northern Kingdom) into idolatry. This he did by setting up two golden calves for worship and his own priesthood, in an attempt to get the people to stay in the north and not go to Jerusalem to worship as they were meant to.
the number is countless really ... :)
To worship the Jews go to the synagogue.
Most people go to israel to worship god because that was where he died for our sins.
Israel
Israel first fell to idol worship during the time of the judges, as depicted in the biblical book of Judges. The cycle of idolatry, punishment, repentance, and deliverance became a recurring theme throughout Israel's history.
Aaron built it, using the golden things that the Israelites had. He melted them down and made the calf.
After the kingdom split, Jeroboam erected two golden calves for the people of Israel to worship instead of going to the temple in Jerusalem (part of the southern kingdom). It seems unlikely that Jeroboam was introducing "bull worship". Rather, he was attempting to personify God in a form he thought the people could relate to. See 1 Kings 12: http://www.biblegateway.com/passage/?search=1%20kings%2012:25-30;&version=31;
No. When Moses saw people worship the golden calf, he smashed the 2 Tablets.
They made a golden calf to worship.
Israel, definitely. I am not sure what percentage lives there, but I know it is pretty big.
People of Israel are Jews, Christians, and Muslims. Everyone practice worshiping in his/her relevant worshiping place.