Can anyone help with this?

How did the united states surprise other delegates at the washington naval conference in 1921

European imperialism in the 19th century was largely motivated by a desire to: o a. assert power over other parts of the world. b. end the racist policies practiced in many foreign countries. o c. defend europe from aggressive foreign armies. d. relocate ethnic and religious minorities within national borders.

Which statement best explains how the invention of corporations contributed to the economy in the 1800's