How did roman assemblies contribute to democratic principles?
a. assemblies had the power to make laws. b. assemblies acted as advisory councils.
c. assemblies provided a balance of power.
d. assemblies allowed members to debate important issues.

One of the ways in which Roman Assemblies contributed to democratic principles was that they "allowed members to debate important issues", which is an essential aspect of any democracy. 

In the midwest because it has more moderate climate than the north or south west which makes farming far easier.

The price of oil and inflation are connected in a cause and effect relationship, that is, when the price of oil increases, inflation also increases in an economy. this is because, oil is a major input in the economy, that is, it is used for critical purposes such as fueling of vehicles for transportation, for running of industrial generators and machines, for heating homes, etc.for instance, if the price of oil increases in an economy, it will increase the cost of production for those using the oil in their production processes and they will automatically increase the cost of their products in order to offset the extra costs. this leads to general increase in the prices of products in the market and result in inflation.