The concept of national sovereignty was established by:

A. the European invasion of the Holy Lands.
B. the Treaty of Westphalia.
C. the Protestant Reformation.
D. The Peace of Augsburg.

An: B

Yes, see

https://en.wikipedia.org/wiki/Westphalian_sovereignty

thank you

You are welcome.

To find the answer to this question, one can use a variety of research methods such as consulting history books, reliable online sources, or referring to scholarly articles. One can also attend lectures or classes on the topic to gain a deeper understanding.

In this case, the concept of national sovereignty was indeed established by the Treaty of Westphalia. This treaty, signed in 1648, marked the end of the Thirty Years' War and established the principle of state sovereignty in Europe. It introduced the notion that each state has the exclusive authority to govern its own territory without interference from external powers. This idea of national sovereignty became an essential component of modern international relations and is still influential today.

It is worth noting that while options A, C, and D may have had significant historical impacts, they did not directly establish the concept of national sovereignty. The European invasion of the Holy Lands, for example, was driven by religious motivations and aimed to regain control of the region from Muslims. The Protestant Reformation, on the other hand, was a religious movement that challenged the authority of the Catholic Church but did not directly relate to national sovereignty. Similarly, the Peace of Augsburg was a religious settlement between Catholics and Lutherans in the Holy Roman Empire but did not establish the concept of national sovereignty as comprehensively as the Treaty of Westphalia.