I dunno the answers to 1 2 and 3, but 4 is Germany, Italy, and Japan, and 5 is poison gad.
Answer: Spain.
Explanation:
The Spanish Civil War was described as "dress rehearsal", because the bombing of Spanish cities by Nationalist rebels with the support of Nazi Germany and Fascist Italy, allowed them to test new weapons later used in World War II, like the He-111 and Do-17 bombers.
Particularly, gruesome was the bombing of Guernica, later depicted in Pablo Picasso´s painting because it was a military air force attack over civilians, which is considered as a war crime.
B). France's King Phillip Vl snatched land from King Edward lll and retalliation had to follow.
American settlers, Native Americans, and Mexican Americans faced some conflicts in the Mexico cession. They all faced legal, economic, and social discrimination problems.
In short, conflicts over land and water.
Good luck :)