Answer:
Mountains, deserts , and rivers.
Explanation:
such as mountains, deserts, rivers, and seas, made travel to and from China challenging. Other Features are Rivers, hills, plains, deserts, plateaus, and the Himalayan mountains.
It required federal supervision. Many Africans were prevented from voting because they were being harassed. To ensure that they too are able to vote, the Federal government instructed law enforcement and the National Guard to help African Americans to register and vote without fear of being driven of the voting stations.
Because there will always be water on earth, meaning that the cycle will never stop. And because the cycle is continuous and natural. I don't think anything can stop it from happening.
Sit-ins and freedom rides advocated C. NON-VIOLENT PROTEST.
Non-violent protests or non-violent resistance is the practice of achieving goals such as social change through symbolic protests, civil disobedience, economic or political non-cooperation, or other methods without using violence.
Other methods of Nonviolent protests and persuasions are:
1) student strikes
2) sit-downs
3) turning one's back
4) vigils
5) "haunting" officials
6) disrobing