A priori, many may believe that the modern day economy runs differently than an economy thousands of years ago. While an economy thousands of years ago was not as complex as the modern day US economy, there is evidence to show both economies have faced similar problems. In a financial crisis there are underlying issues as to what caused the economy to enter a period of instability. The issues may have been caused by certain fiscal or monetary policies, failure of investment, or even over-lending. The question I will address throughout my thesis is what are the factors that cause a financial crisis, and do these factors overlap throughout certain time periods. I will be looking at a financial crisis in the year 33 AD which the Roman economy faced, and analyze the factors that caused it. I will then look at modern day financial crises in the US and compare them, as I argue there were many overlapping factors that caused these issues in the economy.