The Genoese held the colony of Galata on the Golden Horn across from the city of Constantinople since 1261 as part of the Treaty of Nymphaeum, a trade agreement between the Byzantines and Genoese. However, the dilapidated state of the Byzantine Empire following the civil war of 1341-1347 was easily shown in the control of custom duties through the strategic straights of the Bosphorus. Even though Constantinople was the Imperial seat of power with its cultural and military center on the shores of the Bosphorus, only thirteen percent of custom dues passing through the strait were going to the Empire. The remaining 87 percent was collected by the Genoese from their colony of Galata. Genoa collected 200,000 hyperpyra from annual custom revenues from Galata, while Constantinople collected a mere 30,000. The Byzantine navy, a notable force in the Aegean during the reign of Andronikos III Palaiologos, was completely destroyed during the civil war. Thrace, the main imperial possession besides the Despotate of the Morea, was still recovering following the destruction of marauding Turkish mercenaries during the civil war. Byzantine trade was ruined and there were few other financial reserves for the Empire other than the duties and tariffs from the Bosphorus.

Question: Who received the most cusom dues, the Empire or the Genoese?
Answer: the Genoese

Question: Who collected more custom revenues, Genoa or Constantinople?
Answer: Genoa

Question: What was the greatest income source of the Empire?
Answer: tariffs from the Bosphorus

Question: How many years did the Byzantine civil war last?
Answer: 6

Question: How many more hyperpyra did Genoa collect over Constantinople?
Answer: 170000

Question: How many total hyperpyra were collected for the Empire from Galata and Constantinople?
Answer: 230000

Question: How many years did the 1341-1347 civil war last?
Answer: 3

Question: How many more  collection of 200,000 hyperpyra did Genoa collect than 30,000 hyperpyra  for Constantinople?
Answer: 170000

Question: Which year start  the dilapidated state of the Byzantine Empire following the civil war ?

Question: Which was completely destroyed during the civil war?
Answer: Byzantine navy

Question: How many years did the Byzantine Civil War last?
Answer: 6

Question: How many years did the Byzantine civil war last?
Answer: 6

Question: Which city received less custom revenues from Galata?
Answer: Constantinople

Question: How many more hyperpyra did Genoa collect than Constantinople from custom revenues each year?
Answer: 170000

Question: Which cities collected revenue from Galata?
Answer: Constantinople, Genoa

Question: How many years did the Byzantine Empire civil war last?
Answer: 6

Question: Which city collected the larger amount of custom dues, Constantinople or Genoa?
Answer: Genoa

Question: How many more hyperpyra did Genoa collect than Constantinople in custom dues each year?
Answer: 170000

Question: Which cities collected custom dues from Galata?
Answer: Genoa, Constantinople

Question: What were the two main imperial possessions?
Answer: Thrace, Despotate of the Morea

Question: Where did the Byzantine Empire get most of its financial reserves?
Answer: duties, tariffs

Question: How many years was the civil war?
Answer: 6

Question: How many more hyperpyra did Genoa colled from annual custom revenues from Galata compared to Constantinople?
Answer: 170000

Question: How many years after the Treaty of Nymphaeum did the civil war begin?
Answer: 80

Question: How many percent of the custom dues passing through the strait were not going to the Empire?
Answer: 87