how can the internal be defined? Is it essential the land east of the Missippi that was handed over by Great Britain?

http://dictionary.reference.com/browse/internal

To whom did Britain give the land east of the Mississippi? Are you asking if it was essential to Britain? It would probably have been better for Britain if they'd kept this land.

To define the word "internal," we need to consider the context in which it is being used. Without further information, it is difficult to determine the exact meaning. However, if we assume you are referring to the internal territory of the United States, particularly the land east of the Mississippi River, here's an explanation.

The land east of the Mississippi River refers to the region that was initially under British control and was later handed over to the United States. The Treaty of Paris, signed in 1783, marked the end of the American Revolutionary War and established the boundaries of the newly formed United States.

According to the treaty, the eastern boundary of the United States was set along the Mississippi River, which effectively divided the British-controlled territory from the American-controlled territory. This land became part of the internal territory of the United States, under the jurisdiction and governance of the federal government.

It is important to note that defining the term "internal" can vary depending on the specific context. In the case of territorial boundaries, it typically refers to the area within a country's borders, excluding any overseas territories or possessions. However, without additional information or clarification, further defining the term may be challenging.