The first engagement by African-American soldiers against Confederate forces during the Civil War was at the Battle of Island Mound in Bates County, Missouri on October 28–29, 1862.
Railroads changed ideas about travels because it gives easier access to deliver items to another destination or easier access to travel from one place to another in faster motion, rather than in the late 1800s individuals had to build their own transportations to trade or arrive at a certain place which took months and years
The slavery started when colonists needed help doing their farms and they started to get all kinds of slaves until they realized that African slaves were the best.
Zheng He was a diplomat and navy admiral who served the Chinese Empire during the Ming Dynasty. He commanded expeditions to Southeast Asia and Eastern Africa during the first decades of the 15th century.
Zheng's fleet followed well known commercial trade routes throughout East Asia. He delivered gifts to the places he stopped along the way, such as Brunei, Java, and Thailand. He received goods such as ostriches, zebras, and ivory along the way.
i think it was the aviation because they were constly upgrading
During the 1920s, Southern Railway operated one hundred daily trains
