# Rome Transactions

Rome transactions are Solana transactions with distinct characteristics. Below is an overview of the different types and their specific features:

### Rhea Transaction

Rhea transaction encapsulates a single Ethereum-like rollup transaction within a Solana transaction. Developers can compose this transaction using the Rome SDK function `ComposeSimpleTxn(Rtxn)`.

<figure><img src="/files/dcZ0Wj38Hg86P4xRItzv" alt=""><figcaption></figcaption></figure>

### Remus Transaction

Remus transactions involve multiple Ethereum-like rollup transactions bundled within a single Solana transaction.

This structure allows for cross-rollup transactions. Remus transactions can be created using the Rome SDK function `ComposeCrossRollupAtomicTxn(RTxn1, Rtxn2, Rtxn3 ...)`.

<figure><img src="/files/ETdj5jQIVOiALOjZ8iTQ" alt=""><figcaption></figcaption></figure>

### Romulus Transaction

Romulus transactions integrate multiple Ethereum-like rollup transactions and native Solana transactions bundled within a single Solana transaction.

This structure enables cross-chain transactions. Romulus transactions can be created using the Rome SDK function `ComposeCrossChainAtomicTxn(Stxn1, Stxn2 ... , Rtxn1, Rtxn2, ...)`.

<figure><img src="/files/pJd5dpsq1XmuxxF3iqp6" alt=""><figcaption></figcaption></figure>


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