The articles gave the government no separation of powers. The government was too weak, the Articles left much of the power to the states (if I remember correctly, states basically went by their own state constitution). Congress didn't have the power to tax. To change the Articles, it had to be decided unanimously by all states. Also, 9 out of the 13 states had to approve any major law before it was passed and Congress couldn't regulate commerce. There was no president to lead, no established court system, and every state had only one vote in congress.
Basically, the articles created no separate executive department to carry out and enforce the acts of Congress and no national court system to interpret the meaning of laws.
Labor mobility. In markets, supply is represented by companies while demand is represented by customers. Its not the demand of the product that pays, it is the skill set of the employees that determines the their degree of pay. If you ask yourself why a retail sales person is paid less than a doctor, you will obviously note that the difference in their pay is their skill. Businesses look for profits, and skilled workers drive profitability high hence they get to be paid more than low skilled workers.
The most common method of communication in ancient Asia is sending a messenger on a horse. There are transfer stations for horses throughout the continent that allows the messenger to switch to a new horse after covering some distance. Water transportation is also used for communication. In China during an invasion from the North, soldiers on the towers of the Great Wall of China would light up a torch and all the other towers would do that as well until it reaches the capital.
The Greek philosopher the method was named after is Socrates
