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United States history · War for Independence, 1775–1783

War, alliance and peace: which event changed what?

Trace military reversals and compare an alliance, a capitulation and a peace treaty.

Your task: Use chronology and document scope to distinguish military outcomes, alliance commitments and diplomatic recognition without treating victory as inevitable.

Open the investigation · Read the explanation · Your saved evidence

Starting recap and vocabulary

An alliance establishes commitments between partners. Capitulation sets surrender terms for specified forces. A peace treaty addresses relations between its parties; signing does not prove every term was implemented.

Capitulation
An agreement setting terms for the surrender of specified forces or a place.
Siege
Military operations intended to isolate and compel the surrender of a defended position.
Ratification
Formal confirmation of an agreement by the authority responsible for approving it; separate from signature.
Recognition
Acknowledgment of another political entity’s status; inspect who recognizes whom and on what terms.
01 · TRY

Did the surrender at Yorktown mean every British force surrendered and every peace issue was settled?

Build a turning-point timeline, label each document’s actors and scope, and repair an exhibit that merges alliance, surrender and peace.

Order the dated cards, identify a setback and compare two documents in four supported sentences.

Make a provisional claim

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Inspect evidence and test an explanation

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04 · UNDERSTAND

Connect evidence and mechanism

Diagnose an overconfident victory story

An exhibit says: “The colonists won every important battle, France promised help, and the surrender at Yorktown immediately settled all questions of independence.” Divide this into claims about battles, commitments and outcomes. Your job is to build a better account, not to reenact a battle or pretend a game can establish what would have happened without an ally.

Build a timeline with a reversal

Use the sequence source card to place these events in order. Label each military, political or diplomatic; explain any overlap.

DateEventWhat to investigate
April 1775Fighting at Lexington and ConcordFighting begins before the declaration.
July 1776Declaration of IndependenceA claim of independence is not British recognition.
October 1777Burgoyne’s surrender at SaratogaA military outcome can affect diplomatic judgments.
February 1778Franco-American allianceCommitments have conditions and require implementation.
May 1780British capture of CharlestonAn alliance does not prevent a serious military setback.
October 1781Surrender at YorktownWhich forces and terms are included?
September 1783Treaty of Paris signedWhat status and obligations does the treaty establish?

The table is a selected route through the war, not a complete campaign history. On paper or in a source annotation, draw a line from 1775 to 1783. Place the events at their dates and mark Charleston as a counterexample to the claim of uninterrupted victory. If you use equal spaces for unequal intervals, label your drawing an ordered sequence rather than a time scale.

Check what the reversal changes

The 1780 loss comes after the alliance and before Yorktown. It refutes an account of continuous victory. It does not prove the alliance had no value, nor measure how much assistance changed the overall outcome. A credible explanation includes persistence, losses and changing circumstances.

Connect diplomacy with military cooperation

The alliance treaty states a purpose and obligations. Mark the condition in the source context before describing it as an unconditional promise. Then distinguish three levels: agreement → resources delivered → operational result. Each arrow requires evidence. A treaty is strong evidence for the first level, not a substitute for records of ships, supplies, orders or participation.

The National Park Service account describes joint French and American action at Yorktown and French naval action that prevented British reinforcement or evacuation. Use that as a modern historical explanation to investigate. Do not infer an exact contribution percentage or claim a hypothetical alternative outcome is measured. In a diagram, connect land pressure and restricted sea access to the defended position; label this a relationship sketch, not a geographical map or combat simulation.

Read the surrender’s boundaries

The Yorktown source names the garrisons of York and Gloucester. Underline who, where and to whom in the source notes. A capitulation concerns the forces and conditions specified. It is not equivalent to every British unit laying down arms or a government accepting a final international settlement.

Read article X’s request and response together. A requested protection for local people who joined the British army was not accepted in that article. Do not copy the requested wording into a list of granted terms. Nor should you turn the refusal into proof of a particular person’s fate. That needs a later, attributable record.

Review the request-and-response trap

A negotiated document can preserve proposed terms together with acceptance, modification or refusal. The presence of a proposal on the page does not make it an operative guarantee. Identify the response before drawing a conclusion about the agreement.

Compare surrender with peace

Now inspect the 1783 treaty. Its recognition clause concerns the states, not merely soldiers in one place. The wider document addresses other matters, and its ratification provision distinguishes signature from subsequent formal confirmation. A treaty text also cannot prove that every obligation was immediately fulfilled.

Make a three-row matrix for 1778 alliance, 1781 capitulation and 1783 peace treaty. For each, identify the parties, action, scope, date and one implementation question. An additional question should concern people not represented by the treaty’s signatories: recognition and boundaries agreed by Britain and the United States do not themselves demonstrate Indigenous consent or equal political rights for all inhabitants.

Repair the exhibit and test a new case

Write a 150–200-word replacement for the opening label. Use at least three source IDs, include the Charleston reversal, and distinguish a commitment from observed cooperation. Explain why Yorktown was consequential without reporting it as the same act as the peace treaty. Keep unsupported alternatives labeled as questions.

A fictional archive contains a fort commander’s local surrender agreement, a later recognition treaty, and an undated complaint that a withdrawal obligation remained unfulfilled. Sort these into military action, diplomatic status and claimed implementation problem. The complaint is evidence of an allegation, not by itself a dated finding that the treaty was violated. Identify the missing records needed to evaluate it.

High school: build the sequence and a four-sentence document comparison. AP practice: connect military developments and foreign relations while qualifying a causal explanation. College inquiry: add an operational record and compare what the record shows with what the treaty promises; defend your selection and consider contrary evidence.

This packet is not the entire war. Logistics and finance, southern and western campaigns, Loyalist experience, Indigenous diplomacy, Black people’s wartime choices and civilian consequences need sustained additional investigation. The revolutionary rights lesson asks a separate question: what did independence change about membership and rights?

Worked example

Yorktown article I names particular garrisons; the 1783 treaty recognizes named states. Replacing both with “Britain surrendered” erases the difference between a military force and a government’s diplomatic action.

Check the reasoning, then transfer it

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Keep your evidence and choose a next step

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