I WOULD HIGHLY APPRECIATE IT IF ANYONE COULD ANSWER THIS INSTANT

Which factors contributed to growing tensions in Europe on the eve of World War 1? 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.