Wherever there are Jews.
Judaism is widely practiced today (21st Century). Also, separate from its practice, Judaism is arguably STUDIED today by more people than ever before in its history.
That depends on which branch of Judaism they identify with.
Israel, America, Britain, Canada, France, and lesser numbers in other western European countries.
Judaism can be practiced anywhere in the world!! I guess i would say mostly in Isreal, cuz that's where most Jews r, but rely u can practice it anywhere.
Madonna does not practice Judaism.
Judaism is one of the world's oldest religions. People who practice Judaism are called either "Jews" or "Jewish people."
Usually if you are of Hebrew descent, your religion is Judaism, but not always. There are approximately 500,000 Jews in the world who practice religions other than Judaism.
For Judaism: http://judaism.answers.com/jewish-history/judaisms-influence
What we now call Judaism.See also:Are Hebrews Israelites and Jews the same peopleHow Abraham started Judaism
Judaism is one of the major religions of the world. It is practiced worldwide including in Asia. There are practice Jews in Russia, India, South Korea, Taiwan, and many other Asian nations.
Jews practice Judaism wherever they are. As of mid-2009, that still amounted to almost 140 countries in the world.
People who practice Judaism are Jews.