I believe it would be <span>the high fertility rate in sub-Saharan Africa
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Answer: They push against each other along a line called a front. When a warm air mass meets a cold air mass, the warm air rises since it is lighter. ... On the other hand, when a cold air mass catches up with a warm air mass, the cold air slides under the warm air and pushes it upward. As it rises, the warm air cools rapidly.
Explanation:
the Union of South Africa was created as a self-governing dominion of the British Empire on 31 May 1910 in terms of the South Africa Act 1909, which amalgamated the four previously separate British colonies
Eight years after the end of the Second Boer War and after four years of negotiation, an act of the British Parliament (South Africa Act 1909) granted nominal independence, while creating the Union of South Africa on 31 May 1910
Northern Europe because it was probably cold and had animals that are egstinct now but we're alive then. I think colder areas have more dangerous creatures.