Which (2) events occurred during The Long March?

The Long March was a huge failure, setting Mao backwards in his position of
authority and power within China

The Long March started with 100,000 people, by the end only a few thousand
had survived (including Mao)

Evading certain death, Mao and his Communist forces retreated to the safety of Northern China

The Long March lasted (6) years, totaling 2,500 miles