Early North Americans migrated across the land bridge from Asia during the Ice Age mostly likely due to a food/resource shortage
It was hard for Muhammad to find a new leader because he was only one of the religious leaders
original source A direct source of information or research
Primary source. In the study of history as an academic discipline, a Primary Source (also called an original source or evidence) is an artifact, document, diary, manuscript, autobiography, recording, or any other source of information that was created at the time under study. It serves as an original source of information about the topic.
