Who was Martin Luther and what idea of his became the chief thrashing of the Protestant reformation?

Why is Christianity the fastest growing religion in china? At what time was Baby Jesus born? Where was Christ crusified? What is a sanctuary and its role in religion? How did the Ottoman Empire defeat the safavids in 1514? Why do Islamic women wear a chador? What is Yiddish for disappointed? Which way do they go around the kaaba? What is the main difference between Judaism and Christianity? Do christians think highly of ishmael and esau? What significance do the gates of heaven hold in the Bible and how do they relate to the concept of salvation? What is the relationship between the religion and the natural habitatin Buddhism? What are Hindus not allowed to eat because of their religion? What was Guru Nanak job? What was Matthew's occupation in the bible? Who were the guided calphs and why were they rightly guided? What is the gospel usually about in the church? What are the main proponents? What is obligatory to do at Eid? Why is Jesus so important to Christians?