The answer is letter D.
Slavery began in ancient times and has existed around the world in different forms. Many evidences in Ancient Egyptian cultures tell stories of slavery in the building of colossal monuments of power. Other accounts are the first civilizations who used slaves to perform agricultural tasks and other forms of productions in their time. African Americans were also enslaved some time in history, being sold from one market to other. Native Americans were also enslaved during the colonization of the European society.
Ancient Grecian Government
Ancient Greece was the beginning of democracy. In 507 BC Cleisthenes introduced a new form of government and principle which was "rule by the people" and leaders were elected.
This system was divided into three groups: writers of the laws, a council of representatives from each tribe, and courts where citizens argued cases before randomly-selected jurors.
Ancient Roman Government
Roman government went through many changes during its existence including city state, kingdom, republic, and imperial periods. Its main principle was that of "republic" in which leaders were elected and only for a limited time.
Like the Greeks, the Republican Roman government had three separate branches of government but they operated a little bit differently: legislative (makes laws) with the Senate and assemblies, executive (enforces laws) led by two consuls, and judicial (interprets laws) with eight judges.
Answer:
citric acid cycle intermediates
Explanation:
Many citric acid cycle intermediates can be siphoned off and thus can be used to generate the amino acids. The intermediates which can provide carbon skeletons for the synthesis of the amino acids are oxaloacetate which helps in the formation of aspartate as well as asparagine; and alpha-ketoglutarate which helps in the formation of the glutamine, proline, as well as arginine.
