Question

what was the main consequence of nationalist sentiments in western europe during the mid - 1800s?
expansion of colonial empires
challenging the authority of monarchs
suppression of revolutionary movements
strengthening of monarchies

Explanation:

In the mid - 1800s in Western Europe, nationalist sentiments led people to seek self - determination and national unity. This often challenged the existing power structures, including the authority of monarchs who held traditional power. Nationalist movements aimed to create nation - states based on a shared identity, which was at odds with the autocratic rule of monarchs.

Answer:

challenging the authority of monarchs