Identify the continuities and changes in political systems or structures in India between 1700 and 1900.

Historians study different types of events through time and group these events based upon topics or themes. Breaking historical events up based upon categories makes it easier for people to identify changes and study the effects on people over time.

Some general categories of events include:

Political               - To do with war, power, governments and legal rights

Economic           - How people earn and spend money

Social                    - The everyday lives of people at work and home

Technology       - To do with developments in technology and medicine

4 copper and gold, the california gold rush is why im pretty sure.

the answer is aggresion hope this and mark me as brainiest and add me as friend