Because the HIV virus takes time to multiply and get established. Person might have been infected, but it not show up in tests for some time.
Answer:
Hitler planned to take Stalingrad failed and was forced to go to a defensive, as the Allies took kept advancing and eventually take Berlin.
Explanation:
In the eighth century, Frankish leader Charles Martel stopped the advance of Muslims from Spain into France, thus, impacting the Christian Europe's relations with Muslim Spain as well as impacting the Islamic expansion.
The answer is Sinners in the Hand of an Angry God
The Great Awakening was a series of Christian revivals, so a sermon on sinners fits the timeframe.