Tariff makes the most sense. Embargo is a ban on goods or a country, subsidy is money granted from the government to a business and has nothing to do with trade, quota is a limited amount of a product and again doesn't really have anything to do with trade.
Here the correct option is option A Government positions were based on skills and merit.
Explanation - Earlier in China recruitment in high offices was done on the basis of recommendations that were given by officials about those post but under Confucianism examination system this method was barred. The talented people had to pass an exam that was really tough to crack for which they had to first give an exam at local level to qualify. No relation or recommendations were further entertained.
All of them were split because each of those countries were being controlled by the big four which were the former allies. Hope that helps
Bro your in 7th grade you have to pay attention bro
Getting to know the exact number will be very difficult because some of the abortions are not legal,<span />
