Whats is a commite? and what do they use it for.

Do you mean a committee? If so a Committee is a group of people appointed for a specific function, typically consisting of members of a larger group. Committees are for hearings from interest groups and agency bureaucrats. Committees help to organize the most important work of Congress--- considering, shaping, and passing laws to govern the nation.

i think that it would be tenth of the first

which statement explains one of the reasons world war 1 was so much more destructive than earlier conflicts