The document summarizes the competing land claims and conflict between British and French settlers in the Ohio River Valley from the 1730s to 1750s. Transient explorers gave way to permanent settlers, increasing tensions over land. France strengthened its claim with Celeron's lead plates in 1749. The rivalry escalated into the French and Indian War after Washington's forces skirmished with the French in 1754, beginning seven years of fighting in North America over control of the Ohio Valley.