Why did the soviet union join the allies?

Russia joined the Allies, because Germany invaded its territory

Explanation:

The Allies were the countries officially opposed to the Axis Powers during the Second World War. At the beginning of the war, on September 1, 1939, the coalition confronting Germany consisted of France, Poland and the United Kingdom of Great Britain and Northern Ireland, to which they joined shortly after, some Commonwealth countries (Canada, Australia, New Zealand, the Domain of Newfoundland and the South African Union), the British Raj and the Kingdom of Nepal. In 1940, Free France, Denmark, Norway, Belgium, Luxembourg, the Netherlands, the Kingdom of Greece and the Kingdom of Yugoslavia (1941) were united. In June 1941, the so-called Operation Barbarossa led the USSR to join the Allies. The United States of America joined in December 1941, after the Japanese attack on Pearl Harbor, followed by China and some countries of South America. From 1942, the so-called Big Four, that is, the United Kingdom, the Soviet Union, the United States and China, dominated allied politics.

imma have to go   the third option

sorry if i am wrong hope this

if i am right plz give me brainliest

before we work more on piecing ideas together to form summaries and paragraphs, we need to look at fundamental sentence construction. imagine you are reading a book for school. you need to find important details that you can use for an assignment. however, when you begin to read, you notice that the book has very little punctuation. the sentences fail to form complete paragraphs and instead form one block of text without clear organization. most likely, this book would frustrate and confuse you. without clear and concise sentences, it is difficult to find the information you need.

for both students and professionals, clear communication is important. whether you are typing an email or writing a report or essay, it is your responsibility as the writer to present your thoughts and ideas clearly and precisely. writing in complete sentences is one way to ensure that you communicate well. this section covers how to recognize and write basic sentence structures and how to avoid some common writing errors.