If you literally answer one of these questions it will help me out so much I am panicking this is due in 30 minutes HELP

Describe the Central Europe Campaign

The Central Europe Campaign (22 March-2 May 1945) was the final campaign of the Western Front of World War II in Europe, involving an Allied invasion of Germany along a broad front. ... The campaign lasted until 2 May 1945, when the Americans linked up with Soviet troops along the Elbe at Torgau, dividing Germany in two.

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering