"by 1808, sir george daley had seen the importance of the lift when designing aircraft."
what term acts as the main verb in the verb phrase?
a. had
b. lift
c. designing
d. seen

The answer is c because it describes something a is doing

the answer is: the start of world war i, and russia’s hopes of benefiting from it

during world war i russian joined due to in their current crisis they were being supported by france and the war was already declared to them by germany, they needed to maintain their political goal and leadership role in the balkans, and is the same feeling that this excerpt evoke the eager of maintain the land value.