The two parts of the continent start to move away from each other
causing rifting of the continental plate, the center or the rift becomes thinner, weaker and starts to sag. The basin area in the middle which has sagged is usually filled up with water, forming a sea. (e.g. the red sea)
The thinner plate in the center then becomes oceanic crust from this, and in the center a new constructive plate boundary is formed. <span>The plates continue to move apart from one another and magma erupts from the constructive/divergent plate boundary, producing new oceanic crust formed mainly of basalt.</span>
The Ancient Greek civilization is so well known because of how much it impacts society today. They were the first ones to set the stage to many key things still used today like philosophy, literature, astronomy, mathematics, and medicine. Not only does it impact us it also affected other great civilizations like the Roman Empire. They overall are the root of who we are as a society today especially in the education aspect.
When the British civilians were not allowed to move into the newly won Ohio valley. That was one reason the colonists prepared the revolutionary war, even thought it was not the main reason. But that is one of the first.
Nationalism led to the assassination of the Archduke of Austria Franz Ferdinand. he was assassinated by Gavrilo Princip, a Serbian Nationalist.
