Answer:
What motivated the righteous and harmonious fists to begin the boxer rebellion was: the growing influence form forein people in China.
Step-by-step explanation:
In the 1900 in China there was a secret society that was called the "he righteous and harmonious fists". Translators would call them boxers, that is why the name of "boxer rebellion", they would also practice boxing.
This society was against foreing people in China and also agains chinesse christians. What motivated them to attack these group of people was their hate to them.