Answer:
Seismometer
Explanation:
The Han dynasty was established by Liu Bang a rebel and ruled by the house of Liu. This lasted from 202 BC - 220 AD, and it was the second imperial dynasty of China.
The seismometer was created by Zhang Heng a Chinese astronomer in the year 132 AD. This device can detect the ground's movement during an earthquake, showing the direction of the earthquake no matter the distance.
The correct answer for the question that is being presented above is this one: "Countries needed cheap raw materials for their growing industries." One way that industrialization led to rising imperialism in the 1800s is that Countries needed cheap raw materials for their growing industries.
A main consideration in the advancement of the twentieth century patriot development all through Africa was a shared objective to end European run in Africa. This type of patriotism was a key consider the Indian Independence Movements that at last disjoined ties with Britain and conveyed autonomy to India.
She was only an activist.
