It made it harder for the countries to achieve unity.
One example for this is the separate existence of Chile and Argentina - they are separate counties, because they are separated by the Andes.
Generally, natural borders, such as rivers and jungles made the political unity harder.
3. It is responsible for deciding on whether laws violate the constitution. It does not make laws but rather interprets them. They hold the power to change laws trough judicial review!
4.
Volunteer
Honesty
Trustworthy
Taking responsibility
There are many things to this!
Answer:
or 
Explanation:
Number of longitudes on Earth = 
In one hour the Earth rotates 
So,
takes 

Since the longitude is in the East the time difference will be added.
So, if it is noon in Greenwich the time at 100 degree East will be
or
.
I think the answer is the judicial branch, they determine if the laws are constitutional or not
Darwinism came up with the idea of natural selection.