XVI Rewrite the following sentences. 1. Britain recognized the independence of the United States following their defeat at Yorktown in 1781. → The independence ........................................................................................................... .......................................................................................................................................... 2. People are not fully aware of the catastrophic consequences of pollution, so they keep polluting the environment. → If people .......................................................................................................................... .......................................................................................................................................... 3. Many different agencies such as the Red Cross provided help to the people affected by natural disasters. → The people ....................................................................................................................... .......................................................................................................................................... 4. People are using more and more excessive and inappropriate artificial light. This worsens the situation of light pollution. → If artificial light ............................................................................................................... .......................................................................................................................................... 5. European explorers arrived in Canada in the late 15th and early 16th centuries. Before that, some of the Canadian cultures had collapsed. → By the time ...................................................................................................................... ............................................................................................