An expedition is an adventure or journey somewhere you have heard of before - for example, an expedition on Mount Everest, an expedition to the Amazonian Rainforest, etc.
An example sentence could be:
There are lots more, but they follow the same lines.
I'm ready for the expedition!
Our expedition to the Artic was delayed because of the weather.
The expedition headed toward the center of the continent. They departed on the expedition as a matter of principle.
Going to the South Pole was the most challenging expedition he had ever been on.
Kids might use the word "expedition" in a sentence like, "We went on a school expedition to the science museum," or "Our camping trip was an exciting expedition into the woods." They often use it to describe adventures or trips that involve exploration and discovery.
"what type of expedition are we going on grandad?" Henry said
The children conspired to prove their abilities to have a safe camping expedition.
i went on an expedition
The new judge was assigned to the expedition of pending criminal cases. The Viking explorer Leif Ericson made an expedition to America around the year 1000 AD. We had enough money to finance the expedition, but we needed more qualified scientists.
Expedition in the himalayas and previously unpublished in their entirety.
Add next day shipping to expedite your order.
The adverb clause is "When the expedition began in 1804" and, as all adverbs do, it modifies the verb. In this case, the verb is "left."