Which of the following three battles or sites were important in the revolutionary war?

The battle of Saratoga, the battle of Yorktown and the battle of Lexington and concord

“destroyers for bases agreement in the destroyers for bases agreement between the united states and the united kingdom on september 2, 1940, fifty caldwell , wickes, and clemson class us navy destroyers were transferred to the toyalbnavy from the united states navy in exchange for land rights on british possessions.” i hope this you .