Several reasons.
Saw this crusade as a blessing from God.
Christians would stop fighting themselves.
Christians that would fight would go to heaven or be right with God.
To take back the holy lands, from the Muslims would be a righteous cause.
The answer is Letter C. Iron curtain is the political separation of Western and Eastern Europe. It started from the end of World War II in 1945 until the last part of Cold War in 1991. Countries who are members of the Warsaw pact are located at the east side of the Iron Curtain while NATO members are on the west side.
Winston Churchill was the Prime Minister of the United Kingdom from 1940 to 1945. He was an effective leader because he was honest, decisive, and persistent.