I highly doubt that but it might be true
The early Christians believed that evil spirits or demons often entered humans. In fact they believed that mental illness and even sicknesses were caused by possession by evil spirits. We now know conclusively that mental illnesses and unusual behaviour are not caused by spirits. However, belief in possession by evil spirits has not entirely died out, and a few people sometimes still take part in "exorcisms" to drive out evil spirits. Sometimes these procedures are dangerous in themselves; sometimes they merely prolong suffering by delaying proper medical attention. Whatever causes someone to consider evil spirits to be present, the best advice is to seek proper medical advice.
they are tombs { big graves for imporyant people for the spirits to take }
Evil spirits:Evil spirits are after the souls of those that are weak. They are looking for someone to take over, and those who are depressed are easier to control therefor allowing them a perfect reason to try.
it was to take off the bad spirits because they can go on you
They dont take proper precautionsand leave themselves open to much for a spirit to take control
the reason was that people thought it could take away the bad spirits ad it helped in medicine
Sometimes.
Minefields take up thousands of acres of land all over the world. Sometimes minefields are left behind from previous wars and innocent people are killed just by walking over one accidentally.
No, only demons do that...
Exorcism is a practice that claims to drive evil spirits or demons out of a person, to relieve alleged symptoms of mental illnesses or other unusual behaviour. However, we now know conclusively that mental illnesses and unusual behaviour are not caused by spirits. Belief in possession by evil spirits has not entirely died out and a few people sometimes still take part in "exorcisms", whether for entertainment, financial gain or out of misplaced piety. Most people no longer believe in demonic possession and seek proper medical advice, where once they would have followed superstitious practices.
White spirits
Sometimes.