He should use chronology to analyze the order of events.
Sumerian cities didn't build the ziggurats at the same time
Every government holds three basic kinds of power-legislative power,the power to make laws and frame public policies: executive power, the power to execute,enforce, and administer laws: and judicial power, the power to interpret laws,determine their meaning and settle disputes.
<span>This is about how the market system and the command economy try to cope with the economic scarcity. In the market system, producer produces goods that the market demanded with the resources owned by the producer without the intervention of the government. Whereas in the command economy, the government owned all the resources, make choice on allocating the resources to produce a product and also decide on how to distribute the product</span>