How did the opening of the panama canal change global trade and interaction

Do you believe that unity of purpose and belief are what made the american colonies strong, or do you believe that societies whose citizens were compelled to interact with people of differing beliefs were the most successful, based on the history

African-american soldiers in world war ii sometimes felt they were fighting for two victories, one abroad and one in europe true or false

The source of wealth for the city-states of the east african coast was trade between the interior of africa and the far east. true false