What are the demographic trends for the American family（i.e.size,structure,poverty^）

1.What are the demographic trends for the American family?（i.e.size,structure,poverty^）
2.What is the fundamentalism and its relation to American politics?
3.What are some of the basic differences in structure between the American system of government and the parliamentary system？
拜托懂得的通知帮忙回答一下～～
主要是第二三个问题～～
要用英语回答喔！！！
我要的是答案……不是问题的翻译～
算了，靠都考完了，Don啊～奔溃……

http://www.popline.org/docs/index0804.html

Recent demographic trends in the United States are reviewed with particular reference to their impact on the adequacy of the current system of employee benefits. The paper is in three sections. "First, we discuss macrodemographic changes in relation to the work force, concentrating on the most recent projections of the size and composition of the U.S. population. Second, microdemographic changes relating to changing family economics--especially the rise in the number of working mothers--and the increasing number of elderly dependents are reviewed in relation to their implications for families and the work force. A third and concluding section summarizes the policy implications of these key demographic changes for the future of employee benefits."

1.美国家庭的未来人口趋势是怎样的？（即家庭大小、结构、贫富程度）

2.什么是基要主义？它与美国的政治有什么联系？