Please help me solve this problem

Why are primary sources important when studying historical events

What was one important characteristic of the russian military during world war i? a. it had more advanced military technology than its western european allies. b. it was an all-volunteer military that enjoyed high morale throughout the war. c. it defended russian territory but refused to attack german positions d. it was unable to provide its forces with adequate weapons and supplies.

According to the map, which of these places were part of the french empire or allied with france at some point? select all that apply. spain great britain russian empire austrian empire prussia