In this task, you are given a country name, and you need to return the year in which the country became independent. Independence is a nation's independence or statehood, usually after ceasing to be a group or part of another nation or state, or more rarely after the end of military occupation.

Example Input: Mozambique
Example Output: 1975

Example Input: Mexico
Example Output: 1810

Example Input: Austria
Example Output:
1918