Answer: Britain
During the early 20th century, Britain was considered to be one of the most powerful and biggest empire on Earth. Almost one-fifth of the Earth's landmass is occupied or belong to Britain. The vast space that they has become a big advantage for them.
This is important, because this lead to more trade routs with other countries, and this strengthen the empire as a whole. These roads also lead to more connections to cities, and lead to more homes, and overall improved their society as a whole.
The answer is D I hope this helps
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