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 top 5% of the nation's wealthiest individuals received a third of the nation's income in the 1920's. The inequality towards work conditions, education and other social factors caused a great disparity in economic wealth during the 1920's. As a result only a few were benefactors of the nation's income during that decade.
a) An A independent industry
