Question

which period is marked by british conquest and rapid expansion
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Answer 1

This was followed by a rapid expansion of British power through the greater part of the Indian subcontinent in the early 19th century.

Answer 2

Hi,

Between 1870 and 1900 the formal Empire expanded to occupy an area of 4 million square miles, despite the lack of coherent imperial policies. Indeed, the emergence of new powers, which appeared to rival Britain's economic and imperial supremacy, challenged both its financial and strategic interests.

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~Azzy