Which statement best supports the land bridge theory of early migration?

Land Bridge theory is the theory that explains the migrations of humans to America. According to this theory, the ancestors of Native inhabitants crossed the Bering bridge Which emerged between Alaska and Siberia between 40,000 and  15,000 years ago. Archaeological evidence put the date of human existence in the Americas to be 13,000 years ago. The bridge emerged during the last ice age. According to the theory that challenges the Beringia theory that Beringia was flooded and the inhabitants had to migrate to Alaska and also that they ferried themselves in boats. Another theory states that the entry to North America was blocked by two ice sheets Laurentide and Cordilleran. The hunter-gatherers lived on the Beringia landmass hunting Mammoth and Reindeer and later when the climate became warmer they continued their journey. This happened in a cyclic manner

alliances in ww1 were different from ww2 because the entente in ww1 made up of serbia,russia,france,britan,japan and italy later america  and all allied in a sort of balance of power and too keep germany,austria-hungary,and the ottomans down. russia allied the serbians in order to exert its influence in the balkans while france allied the russians because france was still in dismay and insulted after the defeat to the germans during the unification of germany and britian allied the belgians after the germans invasion of belgium.in ww2 the alliances were in a preemptive attempt to deter any further wars into happening while germany and italy allied since they were insulted and humiliated after the previous war while also sharing a similar ideology of facsim along with japan which all 3 had a want for world domination and agreed to assist one another in the endevours 

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