Metallica's The Black Album debuted at number one in ten countries.
The international chart result demonstrated that the album's appeal extended far beyond the band's established heavy-metal audience. Its polished production, memorable riffs, and more accessible song structures helped it reach the top of album charts in multiple markets.
In the United States, the album also became Metallica's first number-one record on the Billboard 200. It remained there for four consecutive weeks, while its singles continued to perform strongly in several countries.
The figure refers to countries where the album debuted at number one, not the total number of countries in which it eventually charted or sold. Those are different measurements. The Black Album later became one of the best-selling albums in music history, with worldwide sales reported above 30 million copies.