Answer:
In the 1800s, the explorers who were mapping territories and claiming them for their respective nations had some complications and problems specific to their time, such as the lack of communication and transportation technology, which limited the possibility of explorers to travel to certain places. territories and to communicate with each other and with their respective governments.
Therefore, these explorers had to fend for themselves during their travels, both in exploration and in dealing with various dangers and problems during their travels.
If the country or person feels the religion or culture is a threat they may exterminate them, only in some cases
Germany was no valid threat to the Unites States, and he looked back at the first World War and he wanted a legitimate reason to declare war. That happens when Japan bombed Pearl Harbor in December of 1941