How many countries share a land border with Luxembourg?

The answer is 3 because Luxembourg shares a land border with three neighboring countries: Belgium, France, and Germany. These countries are located in close proximity to Luxembourg, and thus, the borders are demarcated by physical boundaries. As a landlocked country, Luxembourg relies on these bordering nations to facilitate trade and travel. The borders with these countries have historical significance and play a significant role in Luxembourg's economic and cultural ties with its neighbors.