Was the Republic of Congo and Democratic one country?

The Republic of the Congo and the Democratic Republic of the Congo were once a single country, known as the Belgian Congo. The Belgian Congo was a colony of Belgium from 1908 until 1960, when it gained its independence. After independence, the country was renamed the Republic of the Congo. In 1964, the country was split into two separate countries: the Republic of the Congo and the Democratic Republic of the Congo. The two countries have been separate ever since.