What was the root cause of the rise of civilizations?

Atch the terms with their definitions. 1. power-hungry militants who grabbed absolute control by force "direct democracy" 2. set the rules and maintained authority within the city-state nobles 3. first name given to the greek democracy solon 4. lofty, financially well-to-do citizens who carried much power within the community assembly 5. in 594 b.c. he was chosen as an athenian statesman with reformation powers tyrants

Full-service brokerage firms a. have lower commissions. c. provide no investment advice. b. offer portfolio management. d. teach you how to do market research.

When conducting research for forming a hypothesis, which practice should historians follow?