Which patriot militia leader convinced many native americans to abandon their british allies, leading to the recovery of the fort at vincennes, indiana

"George Rogers Clark" is the answer!! BTW the answer is 100% correct!

 Good luck!! (  ^-^)

Explanation:

The Patriot militia leader that convinced many Native Americans to abandon their British allies, leading to the recovery of the fort at Vincennes, Indiana, was George Rogers Clark!!  

Info got from -google-

                                                                               Chris on the charts ;P

united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).

i believe the correct answer is b.