How do you identify a stone and it's value

An earthquake’s epicenter can be determined from arrival time data recorded on a(

In an effort to japan recover from the devastating effects of the 1929 depression, japanese military leaders in the 1930s formed an alliance with nazi germany negotiated more trade treaties with the soviet union closed its doors to western trade adopted a policy of imperialist expansion

Why is canada's east coast a great fishing area? will name brainliest and 30