I believe the correct answer is "They traveled on foot while hauling their belongings"
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I believe the answer is that European powers drew up new political borders in the region without consulting political, cultural, or historic realities.
Sympatric Speciation.
Cladogenesis is a phenomenon of evolution that occurs by means of the divergence of taxa because of superb choice for the adaptation of sister populations from a commonplace ancestor to specific environments due to their anatomical, morphological, geographic, temporal, ecological, and/or ethological (behavioral) isolation.
An example of cladogenesis nowadays is the Hawaiian archipelago, in which stray organisms traveled across the ocean via ocean currents and winds. most of the species on the islands are not located anywhere else on this planet because of evolutionary divergence.
Mayr (1974) took into consideration cladogenesis and anagenesis the 2 brilliant phylogenetic strategies of biology. He stated that cladogenesis is the examination of the beginning and nature of the branching sample of the tree of existence.
Learn more about cladogenesis here
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