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.
Answer:
The minority and majority leaders is often assisted in his/her role by one or more [Whip's], whose job is to enforce party discipline on votes deemed to be crucial by the party leadership and to ensure that members do not vote against the position of the party leaders.
April 12, 1861 – April 9, 1865.
Brainliest?
