Event Logger System

You are tasked with designing and implementing an event logging system that supports the following operations:

1. Add Event: Insert an event into the system. Each event has:

   • A unique identifier (could be a string or number).
   • A timestamp (an integer representing seconds, for example).
   • A description (text detailing the event).

2. Remove Event: Delete an event based on its unique identifier. You can assume the event exists when a removal is requested.

3. Query Events: Given a timestamp range defined by a start and end time (inclusive), return all events that occurred within that range.

Requirements:

• Your implementation should support a large number of events and be efficient in terms of event addition, deletion, and especially range queries.
• Choose appropriate data structures to optimize for these operations.
• Although events are added in no particular order, your system should be able to quickly retrieve events within any given time interval.
• Optionally consider how to handle concurrent operations if your design might be extended to a multi-threaded environment.
• Provide a clear interface or set of functions that demonstrate how to use your event logging system.

Implement your solution in the programming language of your choice, using only standard language features and libraries. No external databases or third-party libraries are needed.