What reform to voting procedures followed the panic of 1819?

a. conventions to nominate candidates were no longer public.

b. there were fewer polling places, and they closed earlier.

c. electors were decided by the popular vote of citizens.

d. state legislatures began to choose the electoral college.

no every country is held to the same degree as others just some member countries such as the usa and germany are more economically sound so the need to show there support to all others  

i believe it would influence their own way of understanding things. it shall be a foundation where they can draw or start an argument.   historians are also  scientists that  have their tools of analysis and expertise to unlock a variety of difficulties such as relationships of man, origin, politics, economy, and culture. based on facts and understanding on these areas, they may shade light to extract ideas and develop options to validate a hypothesis or debunk it.