QUESTION: Fix punctuation: But newspapers played a significant role in the formation of the USA around the time of the secession from Britain and the subsequent formation of the new American union
ANS: But newspapers played a significant role in the formation of the USA around the time of the secession from Britain and the subsequent formation of the new American union.

QUESTION: Fix punctuation: In 1644 the Ming emperor sent his best general Wu Sangui to stop an attempted invasion
ANS: In 1644 the Ming emperor sent his best general, Wu Sangui, to stop an attempted invasion.

QUESTION: Fix punctuation: Yet the country lacks its own raw materials for its industries
ANS: Yet the country lacks its own raw materials for its industries.

QUESTION: Fix punctuation: Then you will sail to Luxor passing by Edfu and the Esna lock again
ANS:
Then you will sail to Luxor, passing by Edfu and the Esna lock again.