Add spaces: OnMay6,2009theCenterforPublicIntegritypublishedastudyentitledWho'sBehindtheFinancialMeltdown.

Answer: On May 6, 2009 the Center for Public Integrity published a study entitled Who's Behind the Financial Meltdown.

Add spaces: ThevastquantitiesofpreciousmetalswouldberetrievedfromPotosiinpresentBolivia.There,discoveredtheSpaniardsin1545oneoftheworld'srichestsilverdeposits.

Answer: The vast quantities of precious metals would be retrieved from Potosi in present Bolivia. There, discovered the Spaniards in 1545 one of the world's richest silver deposits.

Add spaces: Below:ThepalaceontheNightofMuseums-onceayearwhereallmuseumsinWarsawofferfreeentranceallnight.

Answer:
Below: The palace on the Night of Museums - once a year where all museums in Warsaw offer free entrance all night.