Arrange events related to the development of hinduisum in the correct sequence

Arrange events related to the development of Hinduism in the correct sequence.

1. Society was divided into four varnas.

2. The Harappa civilization declined.

3. The Bhagavad Gita was written.

4. A rigid caste system developed.

What order do they go in?

Example on how to write it: 1,4,3,2

2,4,1,3

Explanation:

1. The Harappa civilization declined:-

The waning moment of the Harappa civilization was believed to have occurred around 1800 BCE according to various historians.

2. A rigid caste system developed:- according to various historians a rigid caste system was developed in India following the arrival of the Aryan race in the Harappa civilization around 1500 BCE.

3. Society was divided into four varnas.:- around 1000 BCE the Indian society was divided into four Varnas. This includes the following:

Brahmin,

Kshatriyas,

Vaishyas, and

Sudra.

4. The Bhagavad Gita was written:- which translates to "Song of God" was written around 1st or 2nd century CE.

u.s.a

china

india

and

japan

answer; i believe the correct answer is (the willamete valley);