There are too many citizens for each of their interests, ideas and opinions to be heard and taken into account one by one. a representative can take the majority vote of the people and refer it back to the higher power.
The conjugation of the verb "design" to "designed", without any auxiliary verb such as "have" or "do", shows the use of the 'simple past" tense (also known as preterite), whose principal function is to place a completed action or situation in a moment before "now".
What tense is the underlined verb in the sentence? The architect designed a daring structure.
D. Past
The USSR’s help in defeating Japan. The US wanted Stalin to attack from above during the invasion of Japan, aka Operation August Storm. This happened with the Soviet invasion of Manchuria.
Your answer is freedom of rely