Answer:
An oil refinery is a capital product
Civilizations connected through trade first via trading tools with other nearby communities then it evolved into trading more goods such as foods crops and weapons. Then with boats this allowed technology and customs to travel for example Egyptian sculptures influencing Greek art work and the silk road. This helped humanity since a example of isolation was japan until the Miji Restoration. Humanity needs trade in order to communicate and get things they cannot make in their region of the world.
Japanese Americans were put into concentration camps even if they were born in the USA due to suspicions of being spies and they were not treated very well.
As many people suppose one well organized event in which Tsar Nicholas ll was overthrown and Lenin and the bolsheriks took power
