The opinions and prejudice of an author in writing.
I believe that those two elements greatly affect bias in history because we can never be 100% sure of everything that (may have) happened in history (especially farther in the past), so opinion can affect a historian's writings. Also, everyone is prone to some sort of prejudice, so this can also affect history.
A. Buddhism, Confucianism, and daoism
It’s a current from Florida that goes east across the ocean to Europe. The current is warm and it effects north and northwestern Europe “warming it up”. Europe has a warmer climate because of the stream(when you compare it to other countries with a similar latitude.