Major changes in philosophy and science took place in the seventeenth century. Whereas previously, religion was expounded as the answer to every thoughtful question, people began to realise that philosophy and science could provide more credible answers.
For the first time in centuries, people began to think of the universe as fundamentally rational, able to be understood through the use of reason alone. They realised that truth can be arrived at through empirical observation, the use of reason and systematic doubt. The outcome was the realisation that religious doctrines have no place in the understanding of the physical and human worlds.
If religion could not provide the answers, and if religion was not the source of all truth, or perhaps even of any truth, then faith was no longer necessary and religious certainty declined.
Mexicans decided to build a trade company and sell it for cash crops in return. They kept this process going until they were very wealthy and they still do this process today.
around the 11th century
Answer Because of no evil connected in them
No
You can be sure that if there is any truth behind religious beliefs, God will not allow his religion to decline. He would not need belligerent preaching, misrepresentation of history or science, nor any discrimination against those who believe otherwise. He would simply make it happen. So, the odds must be stacked in favour of a religious revival. But if there is no truth in religion, then decline is inevitable. The odds must be stacked in favour of a continuing religious decline.
Diocletian
Ziggurats gradually fell out of use as religious structures when Mesopotamian societies converted to other religions, such as Christianity and Islam, over time. The last ziggurats were likely abandoned around the 4th century AD as a result of changing religious practices and the decline of Mesopotamian civilization.
1991
true
decline in religious unity and in the power of the Catholic Church
Christian religious
The decline in population.