France-Thailand relations cover a period from the 16th century until modern times. Relations started in earnest during the reign of Louis XIV with numerous reciprocal embassies, and a major attempt by France to Christianize Siam modern Thailand and establish a French protectorate, which failed when the country revolted against foreign intrusions in 1688. France would only return more than a century and a half later as a modernized colonial power, engaging in a struggle for territory and influence against Thailand in the Indochinese Peninsula, which would last until the 20th century.