Sex before marriage, abortion
No, pork is not forbidden in Christianity.
No foods are officially forbidden by Christianity.
IN THE 18TH CENTURY
Icons were thought to be a use of worship forbidden by God.
By the time of the fall of the Western Empire, Christianity was well established as the state religion and other religions were forbidden. Naturally, there was no prohibition on Christianity, and persecution of non-Christians was accepted practice.
Drugs, inappropriate pictures or actions, cursing, and much more.
Because it's part of their religion. since it is forbidden in Islam as it is forbidden in Jewish and Christianity.
St. Cecilia was killed because she was a christian at times when Christianity was forbidden.
In Macao, it is forbidden for government employees to gamble at the casinos.
Only the most forbidden things imaginable.
Drugs.
Christianity today is practiced all over the world, though in many countries it is practiced in secret because it is forbidden by the government.