How would you construct a timeline of significant events that led up to the formations of the Roman empire, listing the events in chronological order?

Ides of March, Battle of Actium, march across the Rubicon, Sulla's march on Rome, Gracchi brothers' assassinations, First Triumvirate, Second Triumvirate.
march across the Rubicon, Battle of Actium, Ides of March, Sulla's march on Rome, Gracchi brothers' assassinations, Second Triumvirate, First Triumvirate.
Battle of Actium, Ides of March, march across the Rubicon, Second Triumvirate, First Triumvirate, Sulla's march on Rome, Gracchi brothers' assassinations.
Gracchi brothers' assassinations, Sulla's march on Rome, First Triumvirate, march across the Rubicon, Ides of March, Second Triumvirate, Battle of Actium.

The correct order of events is as follows:

1. Gracchi brothers' assassinations
2. Sulla's march on Rome
3. First Triumvirate
4. March across the Rubicon
5. Ides of March
6. Second Triumvirate
7. Battle of Actium

Gracchi brothers' assassinations, Sulla's march on Rome, First Triumvirate, march across the Rubicon, Second Triumvirate, Ides of March, Battle of Actium.

To construct a timeline of significant events that led up to the formation of the Roman Empire, you need to organize the events in chronological order based on their occurrence. Let's go through each event and determine their correct placement:

1. Gracchi brothers' assassinations
2. Sulla's march on Rome
3. First Triumvirate
4. March across the Rubicon
5. Ides of March
6. Second Triumvirate
7. Battle of Actium

By placing the events in their correct chronological order, we get the following timeline:

1. Gracchi brothers' assassinations
2. Sulla's march on Rome
3. First Triumvirate
4. March across the Rubicon
5. Ides of March
6. Second Triumvirate
7. Battle of Actium

So, the correct answer is: Gracchi brothers' assassinations, Sulla's march on Rome, First Triumvirate, March across the Rubicon, Ides of March, Second Triumvirate, Battle of Actium.