Why was Ziolkowski called a man of determination

Have a good day (～￣▽￣)～

Explanation:

Ziolkowski is called a man of determination because at, almost 40, he knew that he had willingly dedicated his life to keeping his promise to the American Indian people. However, he did not know until later that he would marry Ruth Ross and they would have 10 children. This turn of events made him both happy and proud, and Crazy Horse became a family story.

what are the choices?

a countries leader should be motivated by the common good of the country.