What happened exactly during this period in the last Bull:

The crypto market experienced a significant rise from September to December 2020. Bitcoin, which was traded around $ 10,000 in September, began to increase by exceeding $ 11,000 in October. In November, Bitcoin's price exceeded $ 19,000, approaching its all-time highs from 2017. Ethereum and other altcoins also performed strongly; the popularity of DeFi projects and NFTs increased during this period. In general, investor interest and the entry of institutional investors supported the growth of the market. In December, Bitcoin broke a new record by exceeding $ 20,000. The total market value also increased rapidly during this period.