A historian would use a calendar when he is trying to find the dates of when the event occurred, such as the dates of a battle, natural disaster, or how long a type of government has ruled.
hope this helps
<span><span>The expansion of railroads caused Native Americans to be displaced from their tribal land. </span></span>
Because of the Spanish American War (1898) the Philippines-American War (1899 - 1903), Hawaii became a strategic position for the ships sailing from the U.S. to the Philippines and on the way back as waypoint where ships could re-supply or make repairs. Even the still highly naval base of Pearl Harbor was established around this time, in 1899.
Answer:
Its power came, above all, from trade. empire's total area included nearly all the land between the Sahara Desert and the coastal forests. The 1599 battle of Djenné marked the effective end of the great Mali Empire and set the stage for a plethora of smaller West African states to emerge.