Вопрос 26
Образуйте от слова MASS однокоренное слово так, чтобы оно грамматически и лексически соответствовало содержанию текста.
Humans have lived together in cities since ancient times, but even in 1800 urban areas were home to just 3 per cent of the world’s population.
The __________________ explosion of urbanization that accompanied the Industrial Revolution saw that figure rise 15 per cent in the space of 100 years.