```python

from typing import List

def trace_parcel(events: List) -> List:
    if not isinstance(events, list):
        raise ValueError("Input must be a list.")
    
    if not all(events):
        raise ValueError("Input cannot be an empty list.")
    
    if not all events:
        raise ValueError("Input cannot be None.")
    
    if_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    if not all in events:
        raise ValueError("Event must be one of ['created', 'packed', 'shipped', 'delivered', 'returned'].")
    
    if events[- 1] not in prose_states:
        raise ValueError("Event must be one of ['created', 'packed', 'shipped', 'delivered', 'returned'].")
    
    if events[-1] not in prose_states:
        raise ValueError("Event must be one of ['created', 'packed', 'shipped', 'delivered', 'returned'].")
    
    if events[-1] not in prose_states:
        raise ValueError("Event must be one of ['created', 'packed', 'shipped', 'delivered', 'returned'].")
    
    if events[-1] not in prose_states:
        raise ValueError("Event must be one of ['created', 'packed', 'shipped', 'delivered', 'returned'].")
    
    if events[-1] not in prose_states:
        raise ValueError("Event must be one of ['created', 'packed', 'shipped', 'delivered', 'returned'].")
    
    if_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    if_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    if_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file_states = ['created', 'packed', 'shipped', 'delivered', 'returned']
    
    file