Historians use historical empathy when researching the past. This means that historians try to view the past without judgement. They try to understand the time and place of the people and events they are studying. You will look at three sources to answer the historical research question "Why did the Vikings leave Greenland?” Then write a well-structured paragraph describing one reason the Vikings may have left Greenland. Use in your own words please.

In some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. the production of sterile male ligers is an example of read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. the production of sterile male ligers is an example of a postzygotic barrier the founder effect sympatric speciation a prezygotic barrier

What role did radio free europe play in western countries' cold warstrategy?

If both the president and the vice president can no longer serve, who will become the next head of state?