Letters are capitalized for some things:
1- If the beginning of the name of a country, village, or address
2- Names of people must start in capital letters
3- The first letter in the sentences must start with a capital letter
4- Used for acronyms like US
![https://encrypted-tbn0.gstatic.com/images?q=tbn%3AANd9GcShFrpLXohSE0y9g1qEy93vXl3H7AcQx_PpNA&usqp=CAU](https://encrypted-tbn0.gstatic.com/images?q=tbn%3AANd9GcShFrpLXohSE0y9g1qEy93vXl3H7AcQx_PpNA&usqp=CAU)