At that time, the second continental congress was held, the main content was to strengthen the determination of war and independence, and the declaration of independence was signed, which was also a symbol of the founding of the United States. 1776 in may, the second continental congress was held in Philadelphia, which strengthened the determination of war and independence and signed the famous declaration of independence on July 4.

Taking this opportunity, the declaration of independence is regarded as the beginning of the founding of the United States, and July 4 is also regarded as the National Day by the United States. From 1776 to 1783, thirteen states in North America won the War of Independence under the leadership of Washington. The United States was formally born, and successively formulated a series of laws on democratic politics. Gradually become a completely independent nation state.

Introduction to the geographical location of the United States

The United States is located in the middle of North America in the Western Hemisphere, and consists of the United States, Alaska and Hawaii. The geographical position of the United States is unique and unique. The Mississippi River, which runs through the north and south, has brought one of the widest flat plains in the world to the United States, which is beneficial to the development of agriculture and animal husbandry. The wide and gentle water surface is beneficial to shipping, irrigation and aquaculture.

The Great Lakes are the largest lakes in the world, with an area larger than that of Britain. The vast water surface is not only convenient for water transportation, but also meets a large amount of industrial water, which is suitable for farm construction. The Great Lakes Industrial Zone occupies an important position in the United States. The continental United States borders Canada and Mexico.

Reference to the above content: Baidu Encyclopedia-USA