Final answer:
Several factors turned Great Britain-US relations in the 18th and 19th centuries, including the War of 1812, the Monroe Doctrine, and the Industrial Revolution.
Step-by-step explanation:
In the late 18th and early 19th centuries, several factors turned Great Britain-US relations. One key factor was the War of 1812 between the two nations, which strained their relationship and led to a temporary halt in trade. Another turning point was the Monroe Doctrine of 1823, which established the US as a powerful force in the Western Hemisphere and shifted the balance of power in the region. Additionally, the Industrial Revolution in Britain and the desire for new markets and resources also affected their relations.
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