In my recent research i have been learning about Merkle trees in blockchain, and during my study I read that it is data encrypted design used for data identification and stored all transaction data mined on the bitcoin network safely in blockchain. I also read that it helps miners identify whether transaction have been tempered with and it remove any duplicate transaction and that it has no delay when sending data across the network. They also total and stores all set of transaction in a block and produce digital fingerprint to all these transactions and allow efficient validation from user to check if it include a transaction in a block.

It clear to me from my research that Merkle trees are crucial in blockchain, but I'd like some assistance in understanding what would happen if merkle trees didn't included in the blockchain and what difficulties arise while using them. I would appreciate any corrections you may have so I may improve my research, because learning the technical aspects of bitcoin is my top goal here.