OA. The Franco-American Alliance (Feb. 6, 1778) was an agreement between France and indeed the 13 revolutionary American colonies to provide essential military supplies and loans.
OB. The British approach during the American Revolution was doomed to fail due to poor planning and a lack of cooperation.
OC. The British government reacted angrily to the assembly's conduct.
OD. The withdrawal of France from NATO's integrated military command by De Gaulle in 1966 caused shockwaves through NATO's member states.
The system of checks and balances ensures that the federal government does not abuse the necessary and proper clause through the use of the judicial branch.
The judicial branch (aka Supreme Court) has the ability to rule federal laws/acts constitutional or unconstitutional. In other words, if Congress tries to overstep their boundaries in terms of what actions they can take, the Supreme Court can rule their actions unconstitutional. This ruling would prevent Congress from acting, as all US citizens regardless of political power must follow the ruling of the Supreme Court.
The Berlin Wall was built to stop East Berliners from escaping to West Berlin to flee the Communist controlled East Berlin.
B. Shinto followers worship several gods