How do historians use time lines to organize history?

Which conditions did austria demand of serbia after the assassination of archduke ferdinand? check all that apply. 1. swearing allegiance to the triple alliance 2. accepting responsibility for the assassination 3. turning over control of its military operations 4. surrendering half of its most fertile lands 5. suppressing anti-austrian groups and publications

What was the most important consequence of the large-scale ecological changes in africa two hundred thousand years ago?

In this diary only in researching sidney montz or can it be used to research broader subjects