Original sentence: However international observers have countered this view  and other countries such as Cuba, China, Russia, Turkey, Mexico, Uruguay and Iran came out in support of Maduro as President.The result was challenged by countries such as Argentina, Chile, Colombia, Brazil, Canada and the United States who deemed it fraudulent and moved to recognize Juan Guaidó as president
Edited sentence: Beginning in 2014 the price of oil plummeted from over $100/bbl to $40/bbl a year and a half later, this placed great pressure on the Venezuelan economy, which was no longer able to afford vast social problems.However other countries such as Cuba, China, Russia, Turkey, and Iran came out in support of Maduro as President.The result was challenged by countries such as Argentina, Chile, Colombia, Brazil, Canada, Germany, France and the United States who deemed it fraudulent and moved to recognize Juan Guaidó as president.This has seen Venezuela's oil production decrease from its height of nearly 3mmbbl/d to around 1mmbbl/d.To counter the decrease in oil prices, the Venezuelan Government began taking more money from PDVSA, the state oil company, to meet budgets resulting in a lack of reinvestment in fields and employees.Venezuela's economy had become entirely dependent on the exportation of oil, and a high price per barrel to support social programs