Amalgamation is the process through which feudal societies were developed.
Explanation:
Powerful monarchs gained huge power by occupying the provinces of the feudal lords. They controlled the territories and nations as well as the empires.
As a result the power of the monarchs and the parliament increased and the power decreased in case of barons.
Thus the creation of the national government took place in England, Spain, France and United Kingdom. Later in the German states. Through the ability to remove the politicians lot of leverage was enjoyed in many nations.
Gravity is stronger, the closer the two objects are to each other - that's why you can "escape the Earth's gravity" if you go far enough from it.
So we have to look for the date with the shortest distance - it's 24th December 2010, when the distance was only 368000 km.
~Being close to water means having control of the seas
~Being on the water gives a country more power over their navy
One physical feature is a mountain.
