def convert_old_country_names(c: str) -> str:
    """Converting country old full names to new ones, as some datasets are not updated on the issue."""

    if c == "Macedonia":
        return "North Macedonia"

    if c == "Czech Republic":
        return "Czechia"

    if c == 'Syria':
        return 'Syrian Arab Republic'

    if c == 'Iran':
        return 'Iran, Islamic Republic of'

    if c == "Byelarus":
        return "Belarus"

    return c