I would say d tbh because it seems right
1. Rockefeller envisioned the consolidation of many small oil refineries into one giant company that controlled the production because, when the market for oil grew, the amount of buyers grew more, leading to prices going up and down and many small companies wet into bankruptcy. They created what they called "Our Plan" through Standard Oil to save the industry, by combining the businesses
2. The three major railroads running through Cleveland and the Oil Regions of Pensylvannia were really costly, but when they were initially setup and the traffic started to grow more and more, the costs decreased, causing very high losses to the them. Since Standard Oil had the market power they were able to get discounts on railway freight rates. If a railroad did not wish to work with the Standard’s demands they would just ship with another railroad, so most of the railroads ended up agreed to work with them to continue with the businesses. Railroads were Erie, New York Central, and Pennsylvania.
The formula for volume of a cylinder is V=

r^2h, where V= volume, r=radius, and h=height. So we plug in your numbers and get (3.14)(1.5)^2(4), which equals 28.26 cubic feet. We have a bucket that holds 0.34 cubic feet, so we need to fill it 28.26/0.34 times, which equals about 83.118 times. If she can fill the bucket five times in three minutes, we set up a ratio 3/5 = 83.118/x so 5x=249.3529, and x=49.87 minutes.
The Bedouin fall into two basic social classes. One class is known as the "true" Bedouin, and they live as nomadic shepherds. The other group has embraced farming and is known as the fellahin. The fellahin lead a more settled life on the edge of the desert.