There are many errors in the names of countries and territories:
Senegal Republic
-->
Senegal
Republic of Seychelles
-->
Seychelles
Slovak Republic
-->
Slovakia
Kiribati Republic
-->
Kiribati
All other names don't use long names (Republic of...), excepted for Macedonia.
Cote d'Ivoire
-->
Ivory Coast (in english)
or
Côte d'Ivoire (in french)
but Cote d'Ivoire doesn't exist.
Congo(DRC)
-->
Democratic Republic of the Congo
Reunion Island
-->
Réunion
Mayotte Island
-->
Mayotte
Taiwan Region
-->
Taiwan
Cocos-Keeling Islands
-->
Cocos (Keeling) Islands
Bonaire, Sint Eustatius and Saba
-->
Caribbean Netherlands
Falkland Islands (Islas Malvinas)
-->
Falkland Islands
And please, don't use abreviation in the names of states or territories:
St. Pierre and Miquelon
-->
Saint Pierre and Miquelon
St. Vincent and the Grenadines
-->
Saint Vincent and the Grenadines
St. Kitts
-->
Saint Kitts
St. Helena
-->
Saint Helena
Venezuela is well-known, but Bolivarian Republic of Venezuela is only used on the official papers:
Bolivarian Republic of Venezuela
-->
Venezuela
Same with Republic of Macedonia:
Macedonia (F.Y.R.O.M.)
-->
Republic of Macedonia (I use 'Republic of' in order not to be confused with the region Macedonia)
Same with Cabo Verde (in portuguese only):
Cabo Verde
-->
Cape Verde
Same with Macau and Hong Kong:
Macau SAR, China
-->
Macau
Hong Kong SAR, China
-->
Hong Kong
South and North Korea don't have parenthesis:
Korea (South)
-->
South Korea
Korea (North)
-->
North Korea