I think the answer is 100
The Ancient Greeks had many different means of communication. One consisted of torches positioned behind a small panel. They had a code that allowed messages to be transmitted by signalling with the torches. ... It allowed a message to travel from India to Greece in five days.
The central cause for almost all the treaties that were made with the American Indians were over land disputes, since almost all battles during this time took place over the expansion of white settlements.
