what kind of constitution did they have?
It was a constantly-evolving, unwritten set of guidelines and principles passed down mainly through precedent, by which the government and its politics operated.
Roman Republic
The Constitution of the Roman Republic was a constantly-evolving, unwritten set of guidelines and principles passed down mainly through precedent, by which the government and its politics operated. 
what do the colours on the japanese flag represent UNANSWERABLE describe the protocols for it? The flag may fly from sunrise until sunset; businesses and schools are permitted to fly the flag from opening to closing. how is the design of the flag? Issued by the Japan Defense Agency (now the Ministry of Defense) in 1973 (Showa 48), specifications list the red color of the flag as 5R 4/12 and the white as N9 in the Munsell color chart. The document was changed on March 21, 2008. is it different from military flag? Yes, JSDF and the Japan Ground Self-Defense Force use the Rising Sun Flag with eight red rays extending outward. A gold border is situated partially around the edge. when was the ground force establish? July 1, 1954 how is the structure of the self defense forces of japan? The Prime Minister is the commander-in-chief of the Japan Self-Defense Forces. Military authority runs from the Prime Minister to the cabinet-level Minister of Defense of the Japanese Ministry of Defense. what is the definition of the above mentioned authority? The formal role and title of a ruler commanding the armed forces derives from "Imperator" of the Roman Kingdom, Roman Republic and Roman Empire, who possessed "imperium" (command and other regal) powers. how was the clothing of roman republicans? The basic Roman garment was the Greek-style tunic, worn knee-length and short-sleeved (or sleeveless) for men and boys, and ankle-length and long-sleeved for women and girls. The toga was distinctively Roman.
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Roman Republic [SEP] Constitutional system
The constitutional history of the Roman Republic began with the revolution which overthrew the monarchy in 509 BC, and ended with constitutional reforms that transformed the Republic into what would effectively be the Roman Empire, in 27 BC. The Constitution of the Roman Republic was a constantly-evolving, unwritten set of guidelines and principles passed down mainly through precedent, by which the government and its politics operated. Throughout the history of the Republic, changes in the constitution were driven by conflicts of interest between the aristocracy and ordinary citizens.