By the start of the twentieth century, Germany and the United States had challenged some of Britain's economic lead. Subsequent military and economic tensions between Britain and Germany were major causes of the First World War, during which Britain relied heavily upon its empire.he British Empire comprised the dominions, colonies, protectorates, mandates and other territories ruled or administered by the United Kingdom.
A heart murmur is an extra or unusual sound heard during a heartbeat. Murmurs range from very faint to very loud. Sometimes they sound like a whooshing or swishing noise. Normal heartbeats make a lub-DUPP or lub-DUB sound.This is the sound of the heart valves closing as blood moves through the heart.Doctors can hear these sounds and heart murmurs using a stethoscope.ometimes they sound like a whooshing or swishing noise. Normal heartbeats make a lub-DUPP or lub-DUB sound. This is the sound of the heart valves closing as blood moves through the heart. Doctors can hear these sounds and heart murmurs using a stethoscope.
People who have a resting heart rate of 80 beats per minute (bpm) are 45 per cent more likely to die of any cause in the next 20 years compared to those with the lowest measured heart rate of 45 bpm. Most peopleâs resting heart rate is between 60 and 100 bpm but the hearts of professional athletes beat around 40 times per minute. The researchers found that the risk of dying from any illness or health condition raises by around nine per cent for every 10 bpm over.