Adequate sources for World History studying

<p>So ,I ve been preparing for my world history subject test in December but I just dont think Princeton review is enough.After completely covered their review pages,I still miss about 25 questions and I need to reduce this to ~15 in order to get 800.Still,I have about three weeks but I also have Math lvl 2 test to study for ..
What do you suggest ?Some good online materials ..I heard Barrons is very comprehensive but also it covers too much extra material and ,sadly,no time for this.</p>

<p>come on ? no one ?</p>

<p>three weeks is more than enough :wink: try Barrons out.</p>