How to say dark ages in different languages

You can say dark ages as middeleeuwen in the following countries: Aruba; Belgium; Curacao; Netherlands; Netherlands Antilles; Sint Maarten; Suriname;

You can say dark ages as treva in the following countries: Angola; Brazil; Cabo Verde; Guinea-Bissau; Mozambique; Portugal; Sao Tome and Principe;

You can say dark ages as 黑暗时代 in the following countries: China; Hong Kong; Macao; Taiwan;

You can say dark ages as medeltiden in the following countries: Aland Islands; Sweden;

You can say dark ages as keskajal in the following countries: Estonia;

You can say dark ages as темные века, темные времена, средневековье, мрачное средневековье in the following countries: Russia;

You can say dark ages as середньовіччя in the following countries: Ukraine;