one is the land bridge theory the other is the costal theory and the l.ast one is the Australia theory.
People from great Britain populated America in the mid 17th century
Around 560 people lived in North America when Europeans first arrived. Around 560 people lived in North America when Europeans First arrived.
Practical Science are people who do experients to explain the Science theories.
Technically no one "arrived" first in America because the Native Americans were in America before people knew there was one. The questions asking who arrived first is asking just that. If I am throwing a party and I ask who arrived first the answer would not be me if I am already there.
Theories are just that. Theories are unproven ideas by people to explain a certain phenomena.
It's not really known who arrived first in the Americas. The most common theory is that people of the northern area of modern Russia arrived about 30,000 years ago via the Bering land bridge (Beringia). However, there is evidence of people settled in the Western Hemisphere long before these people could have arrived. Some theories support ocean going people from the northern Japanese islands. Other theories support the arrival of early Polynesians. No matter which theory you support, it is at best a guess with some evidence. The fact is that modern dating techniques prove that the Beringia theory is not perhaps as accurate as once believed.
The first people to come to America were the pilgrims. __ The Vikings arrived in North America long before the pilgrims arrived. Prior to the Vikings, the people we call First Nations or Native Americans migrated here first.