French Language in Belgium: Antagonism between speakers of French and Dutch increased after the independence of Belgium in 1830, when residents of the Southern Netherlands and their exclusively French-speaking political elite rebelled against the newfound hegemony of the northern provinces of the United Kingdom of the Netherlands. They also speak German language.
shake hands with all who are present, including children.
shake hands again when leaving.
exchange cheek kisses with a friend you know well. Start with the left cheek, then kiss the right, then back to the left. However, men don't kiss other men. They always just exchange handshakes.