Answer:
Imperialism is a policy of extending a country's power and influence through diplomacy or military force. It led to increased competition among nations and to conflicts that would disrupt world peace in 1914.
In 1978, Leach Walesa led a worker's strike in Poland.
It might be the third one I think
In the United States, a pledge of abstinence had been promulgated by various preachers... Correct Answer!