when the first railroads were built , what problem often occurred in transferring from one railroad line to another one

When the first railroads were built, what problem often occurred in transferring from one railroad line to another one? Goods had to be unloaded and reloaded.

the correct answer is d. the monetary reserve is a set of funds represented in currency, money or similar, saved as a forecast of possible needs or for legal reasons.

the increase or decrease in the monetary base influences in the increase or decrease of the inflation rate. therefore, the excess of monetary reserve will cause the reduction of inflation.