Problems after World War I, This was one of the most important Many countries in Europe struggled with
long-term causes of World War IL
a medical
b, educational
Gimmigration
d. economic

I think the answer might be economic. This is because Russia was the first country to drop out of the war because they ran out of supplies which therefore led to a revolution. The Treaty of Versailles really messed up the German economy because they had to limit their strength of their miltiary and had to pay a ton of money for the war damage. This led to Germany printing more money which led to hyper-inflation. This therefore led to Hitler taking power and starting ww2.

Explanation:

the correct answers are the following

a proxy war which functioned as a training field for wwii

republican democratic goverment

national side, leaded by the fascist general franco

the spanish civil war took place between 1936 and 1939 and was fought after a military coup undertaken on the 17th july 1936 by a group of generals that had seceeded from the spanish republican army, under the leadership of general franco, and who aimed to expel the democractically-elected republican goverment from power.

this war became a proxy war in which european powers tested their military equipment. on one side, urss and mexico supported the left-wing republican spanish goverment, while nazi germany and fascist italy supported the national fascist side.

franco managed to win the war in 1939, with the significant contribution of the foreign military support, and became the dictator of spain until his death in 1975.

explanation:

mark brainliest and have a great day!