Answer:
They were all important in contributing to the growth of representative government.
Possibly the telegraph. Morse code came into place with that. People could communicate with ticks.
Answer:
Agricultural yields were about 2 tan (a unit of about 110 pounds or 50 kilograms) of grain per mu during the Song dynasty, compared with 1 tan during the early Han and 1.5 tan during the late Tang.
Explanation:
Interest is calculated as a percentage of a loan balance, paid to the lender periodically for the privilege of using there money.
Answer:
changes in satistics describing grain size distributions long been used to sediment transport