What allowed native americans in mexico to settle cities larger than those in areas to the north?
a. the use of farming to feed a larger population
b. the development of cities that were built by an earlier civilization
c. the use of advanced engineering methods learned in asia
d. the requirement of their religion to have large cities

united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).

basic principles: federalism, separation of powers, checks and balances, judicial review, representative democracy, limited government, rule of law, individual rights and responsibilities, consent of the governed, majority rule, popular sovereignty, equal protection.