Given the tens of millions of people and the 4,000 mile length the question refers to - numerous religions especially all the main stream one, Christianity, Islam etc.
polytheistic which means that they believed in multiple of gods
If you believe in creationism, that is the first religion. from a nonsecular point of view, the early African tribes in the paleolithic times practiced something called sympathetic magic. Sympathetic magic were rituals and dances that supposedly brought fortune to a hunt or encounter. Arguably this is the first religion, little is known about the practices other than this though.
In medieval Europe science was generally not practiced. The Bible and the works of Aristotle were used to describe who the world worked and were considered complete and authoritative.
it is the indus river
The greek-orthodox religion.
Jews
Mostly Christianity.
Hinduism, for the most part, but Jainismin the older times!
They thought that the river was deadly.
well apache religion is really close to Hindu and buddism, and in the mythological times that's what they practiced, so i would assume that they practice it still.
their religion is mostly based on Christianity that is they believe in God and their s nothing creepy on strict about their religion and customs in these modern times
The most common religion in Egypt now is Islam. But before they started to get taken over by other cultures, Egyptians practiced a polytheistic religion where the people believed in an afterlife. This was in ancient times.
Members of the Church of Jesus Christ of Latter-day Saints (the "Mormon" church) believe that they are practicing the same religion that is found in the Bible. So, according to Mormons, those named in the Bible were the first people to practice Mormonism. Mormons believe that this Biblical religion stopped being practiced in about 100 AD in the old world and 300 AD in the new world. In modern times, the religion was restored by Joseph Smith in the 1830's. When the Mormon Church was officially founded on April 6, 1830, there were already 30 members. So, collectively, these 30 people were the first to practice the religion in modern times.
In modern times predominantly yes, but there are others. Not in ancient Egypt though
along the river valleys in the north of India
along the river valleys in the north of India
along the river valleys in the north of India
In modern times most of the country are Muslim and follow Islamic everyday lives