Many religions, including Christianity deprecate homosexuality.
It is constant variance, a condition found in a type of scatter graph. They use this graph to justify the belief that homosexuals are born that way. Which is a misconception. This has also been spelled as [homosdasticity] or [homoskedasticity]
It was used to justify the existence of slavery
economics, intellectual thought, religion, and military
Scientists don't know because they can't find proof to justify the answer.
Christianity had little to do with it; like all religions, it is easily suspended when what you desire to do does not equal what the religion desires you do. For slaves, certain interpretations of the Old Testament book Leviticus were perverted in order to justify the ownership of slaves; the same book was easily pervert to justify killing, not only of slaves but also of criminals and outcasts. It is still perverted today to justify homophobia and the murder of gay men and lesbians worldwide.
One argument used to justify slavery was the belief in the superiority of certain races over others. This belief was often supported by pseudo-scientific theories that claimed that certain races were naturally suited for slavery. Additionally, economic interests and the need for cheap labor were also used to justify the practice of slavery.
religious places of worship e.g. church can only employ christians:) The Army e.g the army couldn't employ a member of the enemy :)
The defenders of slavery included economics, history, religion, legality, social good, and even humanitarianism, to further their arguments.
by arguing that some people were created to rule others.
Abolitionists used religion to justify their cause by emphasizing Christian values such as compassion, equality, and dignity for all individuals, regardless of race. They argued that slavery was incompatible with these beliefs and that it went against the teachings of love and justice in the Bible. Many abolitionists were motivated by their faith to fight against slavery and believed it was their moral duty to work towards its abolition.
People use other people because they are selfish and think only of themselves. Religion has little to do with it--selfish people would justify their use of others by any means they thought would work.
Canada had and still has a large propaganda campaign designed to discredit Riel and justify their killing of him. In the 1800's and early 1900's homosexuals and their followers would be given very little support so it would be a great rumor to spread.