Twenty-four specific objects transmit complex radio codes, including time signals traveling at the speed of light. You can contact at-least 4 of the objects at anytime of the day or night. The technology described above allows the determination of which of the following?

Answersource rock;

Economy is the answer

Answer a mineral that contains a combination of silicon, si, and oxygen, o, is a silicate mineral. hope it ^.^

It's either  a. chiang kai-shek and the nationalists turned against the communists and killed hundreds of them. orb. hundreds of peasants were killed in shanghai during the period of warlord rule.  if we take into account that there was warlord rule at the time, i think that it's b (not entirely sure though)just my best thoughts.