When did rock layer H form relative to the other rock layers?

Which country is the smallest island of the greater antilles

Read the article titled "castro resigns." why did the us impose trade sanctions against cuba in 1962?

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