In the study of history the available documents for studying a certain period is unchanging over time.
Option: B
Explanation:
History is the study of events and phenomena over space and time. Space means where the particular incident is taking place. Time means the period of occurrence of particular event. A certain period suppose the period of sultanate or mughal empire requires some documents, records to be studied in detail.
And these available documents, records can never be changed over time. History is study of things over changing space and time. Archaeological evidences also keep some valid documents for studying historical events.
a famous american an a wealthy man for telling the king about america
I am not writing the format of the letter or anything, but I will write a small para for u .
Dear (whoever),
We are safe here , hope everything is fine at home too . The crusades fight goes on from morning to evening . Hope everyone is healthy at home . Also convey my best of luck to my brother for his final test next month .
I am seeing a crusade war for the first time in my life . I am very scared but also feeling quite relieved that my elder brother is also there with me . He couldn’t write a letter to you as he is very busy here . In the was , a lot of bloodshed takes place and knives , swords and many other weapons are used . We will reach home back soon hopefully after the war . I wish we return victorious and we all can celebrate our victory at home .
Try giving a letter in reply soon . Waiting to hear from you , father and brother .
This is it , you can change anything if u want , any grammar mistakes then pls forgive ...
Hope this was helpful .