Help, please?
Sort the countries according to their alliances in World War I

Allied Powers:

Britain (and its empire)

France (and its empire)

Russian Empire

Serbia

Central Powers:

Germany

Austria-Hungary

The Ottoman Empire

Bulgaria

Allied: Russia

France

and Britain

Central: Germany

and Austria-Hungary

if Serbia i don't know looks like Serbia's allied ally

World war 2

Central : Germany

Austria-Hungary

Finlandia

Italia

Japan

Thailand

Bulgarian

Allied : American

England

Russian

France

Denmark

Netherlands

Belgium

Canada

Brazil

Mexico

Australia

China

Mongolia

India

And i don't know again

SORRY

b) the confederacy had to pay all union war expenses.

for this case we have the following equation:

we apply distributive property to the terms within parentheses.

subtracting 2 on both sides of the equation: