Greater mobility in the First World War eventually led to trench warfare because the advancements in military technology, such as machine guns and artillery, made it difficult for soldiers to move freely across open battlefields. As a result, both sides dug trenches to protect themselves from enemy fire. Additionally, the development of barbed wire and the use of chemical weapons further hindered mobility, forcing soldiers to seek protection in the trenches. This shift to static, defensive warfare ultimately led to the prolonged and brutal stalemate of trench warfare. **

The number that is greater is 25. **

It depends on the specific number being referred to. If the number being compared is larger than the reference number, then the answer would be yes, the number is greater. However, if the number being compared is smaller than the reference number, then the answer would be no, the number is not greater. It is important to have a specific number in mind when determining if it is greater or not. **

The probability of flipping a fair coin and getting heads is greater than the probability of rolling a fair six-sided die and getting a 6. This is because the coin has only two possible outcomes (heads or tails) while the die has six possible outcomes (1, 2, 3, 4, 5, or 6). Therefore, the likelihood of getting heads on a coin flip is 1/2, while the likelihood of rolling a 6 on a die is 1/6. **

Racism has been prevalent in various parts of the world, but it has been particularly pronounced in countries with a history of colonialism and slavery, such as the United States, South Africa, and Brazil. These countries have experienced deep-seated racial inequalities and discrimination, often institutionalized through laws and social norms. However, it is important to recognize that racism exists in different forms and degrees across the globe, and no single location can be singled out as having the greatest racism, as it is a pervasive issue that manifests differently in different societies. **

Yes, it is true that the greater the density of an object, the greater its gravitational attraction. This is because density is a measure of how much mass is packed into a given volume. According to Newton's law of universal gravitation, the force of gravity between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. Therefore, a higher density means more mass packed into a smaller volume, resulting in a stronger gravitational pull. **

36 is greater than km because km stands for kilometers, which is equal to 1000 meters. Therefore, 36 is greater than km because it represents a specific quantity (36) while km represents a larger unit of measurement (1000 meters). So, even though km is greater than m, 36 is still greater than km because it represents a specific quantity of something. **

Sustainable urban development is important for creating livable, resilient, and inclusive cities for current and future generations. Key factors for sustainable urban development include promoting compact and efficient land use, investing in public transportation and infrastructure, prioritizing green spaces and biodiversity, and implementing energy-efficient and environmentally friendly building practices. Additionally, community engagement and participation, social equity, and economic prosperity are crucial for creating sustainable urban environments. Finally, effective governance and collaboration between government, businesses, and civil society are essential for achieving sustainable urban development goals. **