This is the 18300th most frequent Russian word.
широкомасштабная
"Широкомасштабная" means "large-scale" or "wide-ranging" in English.
In this sentence, "широкомасштабная" is used as an adjective meaning "large-scale," describing the extent of the reform.
Широкомасштабная реформа была проведена в стране.
A large-scale reform was carried out in the country.
Here, "широкомасштабная" characterizes the painting, emphasizing its physical size and possibly the grandeur of its theme.
Эта широкомасштабная картина изобразила историю народа.
This large-scale painting depicted the history of the people.
In this example, "широкомасштабное" describes the study, indicating its broad scope and extensive nature.