Answer:
A war is typically fought by a country or group of countries against an opposing country or group with the aim of achieving an objective through the use of force. Wars can also be fought within a country in the form of a civil or revolutionary war.
A state of armed conflict between different countries or different groups within a country.
A state of competition or hostility between different people or groups.
A sustained campaign against an undesirable situation or activity.
Wars have been a part of human history for thousands of years, and have become increasingly destructive as industrialization and technology have advanced.
Step-by-step explanation: