Can we get the choices please
??
Answer:
1. Sluicing.
2. Placer mining.
3. Hard rock mining.
4. Hydraulic mining.
Explanation:
Mining can be defined as the process of extracting mineral resources from the Earth's surface such as seem, placer, ore-body, vein etc. Some examples of minerals that can be mined are gravel, gold, chalk, petroleum, limestone, coal, potash, rock salt etc.
The various techniques used for mining includes the following;
1. Sluicing: a technique that used a trough to separate gold from gravel.
2. Placer mining: a type of mining in which minerals were found in loose sand and gravel.
3. Hard rock mining: a technique that involved digging tunnels along the veins of gold and breaking up tons of ore.
4. Hydraulic mining: a type of mining that used water under high pressure to blast away dirt, exposing the minerals underneath.
Country A has a positive impact on its resources in this scenario. This country managed to use its superior military to take over land from its neighboring country, land that is very fertile, thus this country significantly increased its natural resources in the fertile soil it got. This will lead to economic growth and stability for this country, and it will be of great benefit on the long run.
Country B, on the other hand, has had negative impact. The country has suffered badly from the natural disasters, losing human lives and losing its important natural resources on the short run, the fertile land. This will have bad economic consequences, and the country will need several years to properly recover from it.
The Battle of Wounded Knee (1890) clearly marks the closing of the American Frontier.
It was this year, 1890, when the Census Bureau declared the American Frontier closed because all the land within the United States were claimed.
The Homestead Act (1862) offered public lands to anyone who settles in the land for a minimum of 5 years. This lead to the surge of American and immigrants moving to territories that have long been occupied by the Native Americans.
The transcontinental railroad (1869) made it possible for people and goods to be transported and traded to other places.
Answer:2/4
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