A, B and D all contributed to Sumer's decline. In the case of A, irrigation caused the salt content of the soil to rise which made it very difficult to utilize for agriculture. As in B, Sumer had no natural barrier and was located on a flat space, making the land susceptible to weather and war. With D, the land became too wet (swampy) and could not be farmed.
a,b,d ;
The decline of Sumer was influenced by geographic factors including irrigation leading to salinization, a lack of natural barriers that made the region vulnerable to invasions, and land becoming too swampy for agriculture. These factors significantly weakened the civilization's ability to sustain itself. The correct answers are A, B, and D.
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Jawaban:Penjelasan:Perjalanan dari Bandung ke Yogyakarta memakan waktu sekitar 6 jam 30 menit, dengan jarak yang ditempuh sekitar 477 km. Waktu perjalanan ini bisa lebih singkat atau lebih lama tergantung pada kondisi lalu lintas dan waktu berhenti di rest area.