They unified after Oda Nobunaga re-established the centralized government in which there was a strict hierarchy of people who were led by a Daimyo, that is, a feudal lord.
I find it important to lead because I have a strong passion for it, I believe I have the skills and leadership to be a leader.
Did this help?? if not sorry
To form an alliance with Great Britain
Was a cause because building an empire needs manpower such as an army and a navy to conquer and keep the land that they colonised. The alliances system meant that a local conflict could easily result into an intimidating global one.
