You need a book. That PERFECT book.
What is a Thesis?
"a thoughtful and thorough development and proof of one basic thesis or idea... A main point is not the same thing as the subject of the paper'
SUBJECT: Churchill's foreign policy towards East and Central Africa after World War II.
THESIS: Churchill's de-colonialization policies and delaying tactics toward East and Central Africa were influenced by his aversion to the liquidation of the British Empire and by the number of white European settlers living in these areas.
Read pages 107-109 and 127 of How to Study History (Handout).
If you can locate and read a book prior to purchasing it, you will be able to make a more informed decision - look at the collections available in the library.
If you cannot peruse the book in person:
Key words to look for in a scholarly review:
The abstract/description provided in the library catalog is usually provided by the publisher. It is more closely aligned with a popular review than a scholarly review.