Answer:
It was weak militarily, but it was a Golden Age for the economy and the arts.
Explanation:
After the first 150 years, the Song Dynasty lost some of its northern dynasty to invaders and moved its capital to the south. A large bureaucracy and wars cost too much. The army was run by civilians and became ineffective.
Hammer and Anvil Technique
The hammer and anvil technique for removing flakes from a core is perhaps one of the oldest documented methods. It is quite effective for making large flakes for direct use as tools, or for use as blanks from which shaped tools can be made. This technique entails using the core as a hammer, and striking the edge of the core against a large, stationary rock (the anvil) in order to remove a flake.
Bipolar Technique
The bipolar technique is a modification of the hammer and anvil technique. In bipolar flaking, the core is placed on the anvil for support, and then struck with a large heavy hammer. The compression from both ends of the core cause it to shatter into hundreds of flakes, some of which will be large enough, and of the right shape for use as tools. This technique is often found in areas where the only reliable source of workable stone is rounded river cobbles that are extremely hard to work in any other fashion.
The answer is B. Scientists study artifacts they discover to form ideas on what life was like in the past. Sometimes there will pieces that doesn't make sense and so they study some more until it makes sense.
The answer is B. Sitting Bull.
He is seen as the central leader, however there were others Chiefs, primarily Crazy Horse.
I believe the answer is the first one
