Question

Joint rule of Oregon Country ended in 1846, but

the British continued to help the United States govern.
trade with the British continued to increase.
the British provided funding for many large settlements.
early settlers were guided by British influence

Answer 1

The joint rule of the Oregon Country ended in 1846 with the Oregon Treaty, which established the boundary between the United States and British North America at the 49th parallel. After this treaty, the British largely withdrew their presence in the region. Therefore, while it can be noted that early settlers in the Oregon Territory were influenced by British practices and trade, the British did not continue to help the United States govern or provide funding for settlements after the joint rule ended.

So, if you are looking for an outcome that persisted even after the end of joint rule, the most accurate statement would be that "trade with the British continued to increase." While the governance changed, trade relationships persisted.