Final answer:
Improved transportation and medicine were key factors driving European exploration in Africa in the late 1800s.
Explanation:
Improved transportation and medicine most increased European exploration and interests in interior Africa in the late 1800s. European advancements in transportation, such as steamships and railroads, made travel more efficient and medicine reduced health risks, facilitating deeper penetration into Africa for trade and colonization. These developments, along with other factors like religious motivations and treaties with native leaders, collectively contributed to the heightened European interest in Africa.
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