More than a year has passed since Bitcoin mining began, when the network suffered a 60%-plus drop in hash rate due to Chinese Communist Party attacks on Bitcoin miners. The aftermath of China's mining ban resulted in the United States exploiting a larger portion of the hash power that used to be located in mainland China.
The hash rate recovered and reached an all-time high again. There is no question about the resilience of Bitcoin. However, one may ask how decentralization of the network and mining can be encouraged to limit the impact of similar attacks on Bitcoin.