whan part of a country leaves or breaks off from the rest it is called?

revolution

Even the split between the Czech Republic and Slovakia was called the Velvet Revolution.

Dissolution is a better word.

When a part of a country leaves or breaks off from the rest, it is often referred to as secession. Secession refers to the act of a region or territory declaring its independence and establishing itself as a separate entity, distinct from the larger country to which it previously belonged.

To learn more about secession in a specific country or historical context, you can follow these steps:

1. Research the country in question: Look up information about the country's history, politics, and any significant events or movements that may be relevant to secession.
2. Study the legal framework: Examine the country's constitution, legal system, or any specific laws or provisions that regulate potential secession processes. This will help you understand the legal perspective.
3. Analyze historical examples: Investigate past cases of secession to gain insights into the factors, motivations, and consequences associated with the separation of a region from a larger country.
4. Consult reliable sources: Look for books, scholarly articles, news publications, or official government documents that provide accurate information on secession in the specific country you are interested in.
5. Consider diverse perspectives: Understand that secession is often a complex and controversial issue. Be sure to consider various viewpoints and opinions from different stakeholders involved in or affected by the potential secession.

By following these steps and conducting thorough research, you can gain a better understanding of how secession applies to a specific part of a country.