Which factors contributed to growing tensions in Europe on the eve of World War I? Check all that apply.Countries built massive armed forces to protect their interests.Countries signed trade alliances promising to sell goods to one another.Countries made promises to protect one another if attacked.Countries competed with one another to build worldwide empires.Countries encouraged strong feelings of devotion to the homeland.
A
Countries built massive armed forces to protect their interests.B
Countries signed trade alliances promising to sell goods to one another.C
Countries made promises to protect one another if attacked.D
Countries competed with one another to build worldwide empires.E
Countries encouraged strong feelings of devotion to the homeland.