Saint Patrick is the patron saint of Ireland, Montserrat and Nigeria.
Saint Patrick did not 'start' any country. He did go to Ireland as a missionary but did not found that country.
Saint Patrick worked in Ireland, of course.
Patrick is the patron saint of Ireland and Nigeria.
The country that Saint Patrick originally came from was Roman Britain, probably Scotland.
Ireland
India is not a primarily Catholic country and Patrick is not a major saint for them. A few Catholics in the country may honor him on his feast day.
He died in Ireland.
America
Saint Patrick drove the snakes from Ireland is just a myth since that country has never had snakes.
St. Patrick is the Patron Saint of Ireland and Ireland is a predominately Catholic country.
Patrick was ordained as a priest and then as a bishop by Pope Celestine I.