Read the map. A map titled Physical Features of East Asia. A key shows Lowlands in green, Highlands in yellow, and mountains with brown triangles. Large areas of yellow span across northern China and Mongolia, west toward Europe, east toward the rivers. Green areas run along the eastern and southern coastline and most of India.

What physical feature had the greatest effect on China’s contact with other countries?

Vast, flat deserts made northward travel easier.
Extensive highlands made westward travel difficult.
River systems helped travel between north and south.
High, dangerous mountains blocked southward travel.

High, dangerous mountains blocked southward travel.

Explanation

right

One aspect of life for most enslaved people during the 1800s their education was limited to learning how to read.  

Option D

Explanation:

Although it's not accurate because during some cases slaves were not allowed to children to study and though it was practiced but it wasn't universalized. While on the other hand education for slaves wasn't really even limited to read some of them were not even allowed to read because their masters wanted them to be inferior and dependent because institution of slavery was based upon the helplessness of people and their dependence and being sufficient which made them stay as a slave.