What innovation would later have the greatest impact on warfare

What is significant about official languages in russian republics? why would it matter?

What were the advantages and dis- advantages of how britain and france ruled in africa?

Plz ive been stuck on this question forever. in 1753 george washington was sent on a mission to a. build a fort at the point where the allegheny and monongahela rivers form the ohio river. b. attack the french at fort duquesne. c. attack the french at fort neccessity. d. deliver a message to the french demanding that they leave the ohio river.