Sikhism, Jainism, Christianity, Buddhism, Judaism, and a number of local religions.
Yes, in Judaism. It means "God with us".
Other religions than Islam are barely tolerated in Iran.
There are Islam, Sunni Muslim, Shia Muslim, Christianity and Judaism.
There are roughly 20 major religions that account for nearly 95% of the world's population (if Atheism is considered one of the twenty). The remaining 5% is spread over an incredible variety of religions that have less than 20 million members apiece.
C. Christianity and Islam
Christianity and Islam are the most common religions in Ethiopia, but there might be some Jewish people too. Christianity has been in Ethiopia longer than Islam.
This is a question asking for opinion rather than fact and therefore cannot be answered. Sufism (a mystical form of Islam) is only more realistic than other religions to those who practice sufism. To a Christian, Christianity is more realistic; to a Taoist, their religion is more realistic.
Judaism and Christianity are from God. Judaism laid the path for Christianity until Christ (the Messiah) was born. God is all knowing, so the religions from God are better than pagan and false religions.
Christianity, Judaism are the main ones, others are less than 1 %.
Monotheism is not inherently superior to polytheism or other forms of religion, but Islam is arguably more monotheistic than is Christianity. Since Judaism does not grant Satan the autonomy that Islam and Christianity do, Judaism could be considered even more monotheistic than the other two religions.
It depends on how you split the groups. As Christianity and Islam are both rooted in the Judaism, most people consider it one of the great religions of the world. These are the Abrahamic religions. Buddhism is more of an ethical system than a religion, but is considered one of the 3 major religions by most Sociologists. Hinduism (Centered in India) is the 3rd major religion.