What do you know about Martin Luther?
He was a German clergyman and one of the greatest exponents of the papal agents. His efforts led to the founding of the protestant religion.
What is meant by celestial?
Celestial means divine or heavenly, while terrestrial implies having a worldly quality.
Tips: -
(V. Imp.)
i. The rapid expansion of the Protestant religion in many countries of Europe shook the Roman Catholic leaders.
What do you understand by the 'Age of Discovery'?