How did it contribute to the stalemate?

both sides tried to outflank each other so neither side could advance forward

Stalemate has also become a widely used metaphor for other situations where there is a conflict or contest between two parties, such as war or political negotiations, and neither side is able to...

Answers to your questions.

Contribute means to give (money, food, etc.)

charity is a good thing to contribute to please add other suggestions on how to contribute to the 'how do you contribute' forum. thank you chemgirl OK, I agree with you but... You maight have been...