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.
Answer: became an independent republic on 9 August 1965
Explanation:
Southern states were known as the cotton kingdom because the cotton population in the south was rapidly growing. Rich plantation owners would grow cotton and sell them to the New England region to make clothes etc.
Mathematics was the tool which scientists used to prove their theories and ideas. Mathematics was able to prove whether an idea a certain scientists had was correct or whether it was wrong. With this they wre able to advance the field very rapidly.
