What the constitution does
Our constitution, signed on September 17, 1787, was made for our US freedom. It tells us exactly what we can and cannot do. It promises our freedom. It tells us our rights clearly spread out. For an example, the 1st amendment states that we have the right of freedom of Speech, Religion, Press, Assembly, and Petition. Now, I know what some of you ask: What would the US be like if there was no constitution? Well, my guess would be that the world would be in total chaos. People would be arrested for speaking their mind, colored people would still be slaves, women wouldn't have the same rights as the men. Overall, the US wouldn't be a very happy place to live in. Our heroes that little kids look up to, wouldn't be heroes, but criminals. Who would want that as a world? Certainly not me, and I hope you don't either.
How it sets the basic structure for government
When our forefathers made the constitution, they made sure they covered many aspects to ensure the stability of our country, and so they also thought up of the structure of the government. They decided that they would never have a monarchy but decided to split up the powers of the government by splitting the central government into 3 branches, the executive, judicial and legislative branch. These three branches had their own limitations and their own powers to make the government coherent and stable. These limitations and powers were stated in the articles of the constitution, therefore making the constitution the central document in the government.
Government without the Constitution
What would our government be like without the Constitution? Basically any one of the three branches of Government could take over. The President could get too much power and take over. Basically, there probably wouldn't be three branches of Government or a president either. There would probably be a monarchy instead of a democracy. England could probably take us over again. The people of the United States would have no say in anything to do with Governmental issues. In other words, the Government wouldn't be to our favor, we wouldn't have any control over it, the Government could pass any law they wanted and they could arrest people on the spot, if they wanted.