The year 536 AD, which included a climate catastrophe, a plague, and the beginning of the Dark Ages, is the year many consider to be the worst in human history. 2020 may not have reached that bar, but it certainly flirted. Regardless, we can finally declare 2020 a memory with December delivering several reasons for the financial markets to be cheerful, with the most notable being another Covid relief bill in the U.S. and the first push of Covid vaccines globally.