D. John Roeblinf - Telephone Switchboard
Answer: New technology methods
Explanation: Techonology itself is developing quick from day to day. It is important to try and add new things that can improve it. So developing a specific method that is very well planned and established can advance technology.
The answer is I actually don’t know :(
John Jacob Astor established trade and trading posts throughout North America.
However, his most famous trading post was on the Columbia River at Fort Astoria, which became the first major American trading post on the Pacific Coast.
Astor profited handsomely from the fur trade and was wildly wealthy.
"He wanted <span>Russia's wheat and oil fields</span>" would be the best option from the list, since the main reason why Hitler invaded was to gain more resources and territory for the German people.
