QUESTION: Fix punctuation: During the first ten years of my professional career I worked mainly within the engineering sector and initially I spent a period of two years abroad in the United States in Detroit
ANS: During the first ten years of my professional career, I worked mainly within the engineering sector and initially I spent a period of two years abroad in the United States, in Detroit.

QUESTION: Fix punctuation: Their rules only allowed one medal to be awarded so after many arguments neither received a Gold Medal for the discovery of Neptune Adams was however awarded the Gold Medal in 1866 for his work on the lunar perigee and acceleration
ANS: Their rules only allowed one medal to be awarded so after many arguments neither received a Gold Medal for the discovery of Neptune. Adams was, however, awarded the Gold Medal in 1866 for his work on the lunar perigee and acceleration.

QUESTION: Fix punctuation: It is easy to transplant wood ants into apple orchards
ANS: It is easy to transplant wood ants into apple orchards.

QUESTION: Fix punctuation: It is indeed extremely rare to be a highly esteemed genuine spiritual Master Therefore countless people are envious of Her role
ANS:
It is indeed extremely rare to be a highly esteemed, genuine spiritual Master. Therefore, countless people are envious of Her role.